CHLOROFORM (TRICHLOROMETHANE)†

Chemical Identification

CAS # 67-66-3
Formula

CHCl₃

Synonyms

methane trichloride; trichloromethane

Physical Properties

Physical description Colorless liquid with a pleasant odor.
Boiling point 143°F Molecular weight 119.4
Freezing point/melting point -82°F Vapor pressure 160 mmHg
Flash point Vapor density 4.12
Specific gravity 1.48 Ionization potential 11.42 eV
Lower explosive limit (LEL) Upper explosive limit (UEL)
NFPA health rating 2 NFPA fire rating 0
NFPA reactivity rating 0 NFPA special instruction
Vapor hazard ratio (VHR)
Historical exceedance percentage
Target organs

Monitoring Methods Used by OSHA

Analyte code (IMIS no.) 0670
Sampling group
Sampler/Sampling media CSC tube (100/50 mg) [SKC 226-01]
Sampling time*

50 min

Sampling volume (TWA)*

10 L

Sampling flow rate (TWA)*

0.2 L/min

Sampling volume (STEL/Peak/C)*
Sampling flow rate (STEL/Peak/C)*
Analytical method instruments GC-FID
Method reference OSHA 5 (fully validated)
Notes
Special requirements

* All sampling instructions above are recommended guidelines for OSHA Compliance Safety and Health Officers (CSHOs), please see the corresponding OSHA method reference for complete details.

Bulk/Wipe Method

Wipe Sampler/Sampling media
Bulk Method

On-Site Screening Techniques

Device Detector tube Detector tube Detector tube
Model/Type Dräger - Chloroform 2/a, 6728861 Gastec 137L Matheson-Kitagawa 8014-152S
Sampling information
(see manufacturer instructions)
10 strokes, approx 1-10 ppm range, uncertainty approx 33% 3-5 strokes, 0.1-27 ppm range, uncertainty 16% for 0.5-2 ppm, 8% for 2-10 ppm 2-4 strokes, approx 20-500 ppm range

Exposure Limits

OSHA PEL
8-hour TWA
(ST) STEL
(C) Ceiling
Peak
NIOSH REL
Up to 10-hour TWA
(ST) STEL
(C) Ceiling
ACGIH TLV©
8-hour TWA
(ST) STEL
(C) Ceiling
CAL/OSHA PEL
8-hour TWA
(ST) STEL
(C) Ceiling
Peak
PEL-TWA REL-TWA TLV-TWA PEL-TWA

2 ppm (9.78 mg/m³)

PEL-STEL REL-STEL

2 ppm (9.78 mg/m³) [60 minutes]

TLV-STEL PEL-STEL
PEL-C

50 ppm (240 mg/m³)

REL-C TLV-C PEL-C
Skin notation

N

Skin notation

N

Skin notation

N

Skin notation

N

Notes:

See 29 CFR 1910.1000 Table Z-1.

Notes:

CARCINOGEN (Ca): REDUCE EXPOSURE TO LOWEST FEASIBLE CONCENTRATION. See Appendix A

Notes:

Visit the ACGIH TLV site for specific data

Notes:
Health factors:  See NIH-NLM PubChem. IDLH

500 ppm

Carcinogenic classifications: IARC-2B, NIOSH-Ca, NTP-R, TLV-A3, EPA-B2; L; NL Notes:

Ca

AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:

--/50 ppm/5000 ppm

Additional Resources and Literature References

Last Updated Date : 05/03/2024

ACETONE†

Chemical Identification

CAS # 67-64-1
Formula

C₃H₆O

Synonyms

dimethyl ketone; ketone propane; 2-propanone

Physical Properties

Physical description Colorless liquid with a fragrant, mint-like odor.
Boiling point 133°F Molecular weight 58.1
Freezing point/melting point -137°F Vapor pressure 180 mmHg
Flash point 0°F Vapor density
Specific gravity 0.791 Ionization potential 9.69 eV
Lower explosive limit (LEL) 2.5% Upper explosive limit (UEL) 12.8%
NFPA health rating 1 NFPA fire rating 3
NFPA reactivity rating 0 NFPA special instruction
Vapor hazard ratio (VHR)
Historical exceedance percentage
Target organs

Monitoring Methods Used by OSHA

Analyte code (IMIS no.) 0040
Sampling group OVSG-4
Sampler/Sampling media Two 600mg silica gel tubes connected in series [SKC 226-183]; tube holder [SKC 222-3L-1]; Type D cover [SKC 224-29D]
Sampling time*

120 min

Sampling volume (TWA)*

6 L

Sampling flow rate (TWA)*

0.05 L/min

Sampling volume (STEL/Peak/C)*
Sampling flow rate (STEL/Peak/C)*
Analytical method instruments
Method reference OSHA 5004 (fully validated)
Notes
Special requirements

* All sampling instructions above are recommended guidelines for OSHA Compliance Safety and Health Officers (CSHOs), please see the corresponding OSHA method reference for complete details.

Bulk/Wipe Method

Wipe Sampler/Sampling media
Bulk Method

On-Site Screening Techniques

Device CMS Chip Detector tube
Model/Type Acetone, 40-600 ppm range Gastec 151
Sampling information
(see manufacturer instructions)
0.05-2%

Exposure Limits

OSHA PEL
8-hour TWA
(ST) STEL
(C) Ceiling
Peak
NIOSH REL
Up to 10-hour TWA
(ST) STEL
(C) Ceiling
ACGIH TLV©
8-hour TWA
(ST) STEL
(C) Ceiling
CAL/OSHA PEL
8-hour TWA
(ST) STEL
(C) Ceiling
Peak
PEL-TWA

1000 ppm (2400 mg/m³)

REL-TWA

250 ppm (590 mg/m³)

TLV-TWA PEL-TWA

500 ppm (1200 mg/m³)

PEL-STEL REL-STEL TLV-STEL PEL-STEL

750 ppm (1780 mg/m³)

PEL-C REL-C TLV-C PEL-C

3000 ppm

Skin notation

N

Skin notation

N

Skin notation

N

Skin notation

N

Notes:

See 29 CFR 1910.1000 Table Z-1.

Notes: Notes:

Visit the ACGIH TLV site for specific data

Notes:
Health factors:  See NIH-NLM PubChem. IDLH

2500 ppm (10% LEL)

Carcinogenic classifications: TLV-A4, EPA-I Notes:
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:

Additional Resources and Literature References

Last Updated Date : 05/29/2025

ISOPROPYL ALCOHOL (2-PROPANOL)†

Chemical Identification

CAS # 67-63-0
Formula

C₃H₈O

Synonyms

dimethyl carbinol, IPA, isopropanol, sec-propyl alcohol, rubbing alcohol, isopropyl alcohol

Physical Properties

Physical description Colorless liquid with the odor of rubbing alcohol.
Boiling point 181°F Molecular weight 60.1
Freezing point/melting point -127°F Vapor pressure 33 mmHg
Flash point 53°F Vapor density 2.07
Specific gravity 0.79 Ionization potential 10.10 eV
Lower explosive limit (LEL) 2.0% Upper explosive limit (UEL) 12.7% at 200°F
NFPA health rating 1 NFPA fire rating 3
NFPA reactivity rating 0 NFPA special instruction
Vapor hazard ratio (VHR)
Historical exceedance percentage
Target organs

Monitoring Methods Used by OSHA

Analyte code (IMIS no.) 1560
Sampling group OVSG-2
Sampler/Sampling media 2 Anasorb 747 sampling tubes (6 mm glass tubes, the front tube contains 400 and the back 200 mg of sorbent) connected in series [SKC 226-82], tube holder [SKC 222-3L-1], Type D cover [SKC 224-29D]
Sampling time*

240 min

Sampling volume (TWA)*

12 L

Sampling flow rate (TWA)*

0.05 L/min

Sampling volume (STEL/Peak/C)*
Sampling flow rate (STEL/Peak/C)*
Analytical method instruments GC-FID
Method reference OSHA 5001 (fully validated)
Notes

Separate tubes and seal each after sampling.

Special requirements

* All sampling instructions above are recommended guidelines for OSHA Compliance Safety and Health Officers (CSHOs), please see the corresponding OSHA method reference for complete details.

Bulk/Wipe Method

Wipe Sampler/Sampling media
Bulk Method

On-Site Screening Techniques

Device Detector tube Detector tube Detector Tube Detector Tube
Model/Type Gastec 113 Gastec 113L Matheson-Kitagawa 8014-122SA Matheson-Kitagawa 8014-150U
Sampling information
(see manufacturer instructions)
0.5 to 2 strokes, 0.004% - 5% range, uncertainty 25% for 50-200 ppm, 16% for 200-800 ppm 1 or 2 strokes, 5-800 ppm range, uncertainty 25% for 50-200 ppm, 16% for 200-800 ppm 1 stroke, 0.02-2.5% range 1 or 2 strokes, approx 10-1200 ppm range

Exposure Limits

OSHA PEL
8-hour TWA
(ST) STEL
(C) Ceiling
Peak
NIOSH REL
Up to 10-hour TWA
(ST) STEL
(C) Ceiling
ACGIH TLV©
8-hour TWA
(ST) STEL
(C) Ceiling
CAL/OSHA PEL
8-hour TWA
(ST) STEL
(C) Ceiling
Peak
PEL-TWA

400 ppm (980 mg/m³)

REL-TWA

400 ppm (980 mg/m³)

TLV-TWA

200 ppm [2001]

PEL-TWA

400 ppm (980 mg/m³)

PEL-STEL REL-STEL

500 ppm (1225 mg/m³)

TLV-STEL

400 ppm [2001]

PEL-STEL

500 ppm (1225 mg/m³)

PEL-C REL-C TLV-C PEL-C
Skin notation

N

Skin notation

N

Skin notation

N

Skin notation

N

Notes:

See 29 CFR 1910.1000 Table Z-1.

Notes: Notes:

BEI®

Notes:
Health factors:  See NIH-NLM PubChem. IDLH

2000 ppm

Carcinogenic classifications: IARC-3, TLV-A4 Notes:

10% of LEL

AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:

Additional Resources and Literature References

Last Updated Date : 06/20/2023

METHYL ALCOHOL (METHANOL)†

Chemical Identification

CAS # 67-56-1
Formula

CH₄O

Synonyms

carbinol; columbian spirits; methanol; pyroligneous spirit; wood alcohol; wood naphtha; wood spirit

Physical Properties

Physical description Colorless liquid with a characteristic pungent odor.
Boiling point 147°F Molecular weight 32.1
Freezing point/melting point -144°F Vapor pressure 96 mmHg
Flash point 52°F Vapor density 1.11
Specific gravity 0.79 Ionization potential 10.84 eV
Lower explosive limit (LEL) 6.0% Upper explosive limit (UEL) 36%
NFPA health rating 1 NFPA fire rating 3
NFPA reactivity rating 0 NFPA special instruction
Vapor hazard ratio (VHR)
Historical exceedance percentage
Target organs

Monitoring Methods Used by OSHA

Analyte code (IMIS no.) 1660
Sampling group OVSG-2
Sampler/Sampling media 2 Anasorb 747 sampling tubes (6 mm glass tubes, the front tube contains 400 and the back 200 mg of sorbent) connected in series [SKC 226-82], tube holder [SKC 222-3L-1], Type D cover [SKC 224-29D]
Sampling time*

60 min

Sampling volume (TWA)*

3 L (or 5 L when humidity is greater than 50%)

Sampling flow rate (TWA)*

0.05 L/min

Sampling volume (STEL/Peak/C)*
 

 

Sampling flow rate (STEL/Peak/C)*
 

 

Analytical method instruments GC-FID
Method reference OSHA 5001 (fully validated)
Notes
 

Separate tubes and seal each after sampling. 

Special requirements
 

 

* All sampling instructions above are recommended guidelines for OSHA Compliance Safety and Health Officers (CSHOs), please see the corresponding OSHA method reference for complete details.

Bulk/Wipe Method

Wipe Sampler/Sampling media
 

 

Bulk Method
 

 

On-Site Screening Techniques

Device Detector tube Detector tube Detector tube Detector tube Detector tube CMS Chip
Model/Type Gastec 111 Gastec 111 Gastec 111 Matheson-Kitagawa 8014-119SA Matheson-Kitagawa 8014-119U Methanol, 20-500 ppm range
Sampling information
(see manufacturer instructions)
0.5 to 4 strokes, 0.0004-4.5% range, uncertainty 25%; for 0.02-0.5%, 16% for 0.5-1.5% 1 to 2 strokes, 5-1000 ppm range, uncertainty 25% for 40-200 ppm, 16% for 200-1000 ppm 2 to 4 strokes, 0.2-56 ppm range, uncertainty 25% for 2-5 ppm, 16% for 5-20 ppm 1 stroke, 0.05-6% range 1 stroke, approx 20-1000 ppm range

Exposure Limits

OSHA PEL
8-hour TWA
(ST) STEL
(C) Ceiling
Peak
NIOSH REL
Up to 10-hour TWA
(ST) STEL
(C) Ceiling
ACGIH TLV©
8-hour TWA
(ST) STEL
(C) Ceiling
CAL/OSHA PEL
8-hour TWA
(ST) STEL
(C) Ceiling
Peak
PEL-TWA
 

200 ppm (260 mg/m³)

REL-TWA
 

200 ppm (260 mg/m³)

TLV-TWA
 

200 ppm [2008]

PEL-TWA
 

200 ppm (260 mg/m³)

PEL-STEL
 

 

REL-STEL
 

250 ppm (325 mg/m³)

TLV-STEL
 

250 ppm [2008]

PEL-STEL
 

250 ppm (325 mg/m³)

PEL-C
 

 

REL-C
 

 

TLV-C
 

 

PEL-C
 

1000 ppm

Skin notation
 

N

Skin notation
 

Y

Skin notation
 

Y

Skin notation
 

Y

Notes:
 

See 29 CFR 1910.1000 Table Z-1.

Notes:
 

 

Notes:
 

BEI®

Notes:
 

 

Health factors:  See NIH-NLM PubChem. IDLH
 

6000 ppm

Carcinogenic classifications: Not listed Notes:
 

 

AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:
 

200 ppm/1000 ppm/5000 ppm

Additional Resources and Literature References

Last Updated Date : 06/20/2023

PORTLAND CEMENT†

Chemical Identification

CAS # 65997-15-1
Formula
 

Mixture

Synonyms
 

cement; hydraulic cement; Portland cement silicate

Physical Properties

Physical description Gray to white, odorless powder.
Boiling point Molecular weight
Freezing point/melting point Vapor pressure 0 mmHg (approx)
Flash point Vapor density
Specific gravity Ionization potential
Lower explosive limit (LEL) Upper explosive limit (UEL)
NFPA health rating NFPA fire rating
NFPA reactivity rating NFPA special instruction
Vapor hazard ratio (VHR)
Historical exceedance percentage
Target organs

Monitoring Methods Used by OSHA

Analyte code (IMIS no.) 0577 (total); request using analyte code 9135 P104 (resp); request using analyte code 9130
Sampling group
Sampler/Sampling media Tared low-ash 37 mm PVC filter, 5 microns [SLTC108] Tared low-ash 37 mm PVC filter, 5 microns, preceded by 10 mm nylon Dorr-Oliver cyclone for respirable samples. [SLTC108]
Sampling time*
 

240-480 min

 

240-480 min

Sampling volume (TWA)*
 

960 L

 

816 L

Sampling flow rate (TWA)*
 

2 L/min

 

1.7 L/min ±5%

Sampling volume (STEL/Peak/C)*
 

 

 

 

Sampling flow rate (STEL/Peak/C)*
 

 

 

 

Analytical method instruments Gravimetric Gravimetric
Method reference OSHA PV2121 (partially validated) OSHA PV2121 (partially validated)
Notes
 

If the net weight of the sample yields a concentration below the PEL after considering the associated SAE , the SLTC will perform no further work on the sample and the sample air concentration will be reported as the calculated gravimetric air concentration. If the net weight corresponds to an amount greater than the PEL value after considering the associated SAE, the sample may be analyzed for  the applicable component and appropriate results will be reported.

 

If the filter is not overloaded, samples can be collected up to an 8-hour period. If the net weight of the sample yields a concentration below the PEL after considering the associated SAE , the SLTC will perform no further work on the sample and the sample air concentration will be reported as the calculated gravimetric air concentration.

If the net weight corresponds to an amount greater than the PEL value after considering the associated SAE, the sample may be analyzed for  the applicable component and appropriate results will be reported.

Special requirements
 

FOR TOTAL DUST SAMPLES, DO NOT USE A CYCLONE!!

 

 

* All sampling instructions above are recommended guidelines for OSHA Compliance Safety and Health Officers (CSHOs), please see the corresponding OSHA method reference for complete details.

Bulk/Wipe Method

Wipe Sampler/Sampling media
 

 

Bulk Method
 

 

On-Site Screening Techniques

Device
Model/Type
Sampling information
(see manufacturer instructions)

Exposure Limits

OSHA PEL
8-hour TWA
(ST) STEL
(C) Ceiling
Peak
NIOSH REL
Up to 10-hour TWA
(ST) STEL
(C) Ceiling
ACGIH TLV©
8-hour TWA
(ST) STEL
(C) Ceiling
CAL/OSHA PEL
8-hour TWA
(ST) STEL
(C) Ceiling
Peak
PEL-TWA
 

15 mg/m³ (total dust), 5 mg/m³ (respirable fraction)

REL-TWA
 

10 mg/m³ (total), 5 mg/m³ (resp)

TLV-TWA
 

1 mg/m³ (respirable particulate matter) [2009]

PEL-TWA
 

10 mg/m³ (total dust), 5 mg/m³ (respirable fraction)

PEL-STEL
 

 

REL-STEL
 

 

TLV-STEL
 

 

PEL-STEL
 

 

PEL-C
 

 

REL-C
 

 

TLV-C
 

 

PEL-C
 

 

Skin notation
 

N

Skin notation
 

N

Skin notation
 

N

Skin notation
 

N

Notes:
 

See 29 CFR 1910.1000 Table Z-1 and 1910.1000 Table Z-3, Mineral Dusts, [as Silicates (less than 1% crystalline silica): 50 mppcf].

Notes:
 

 

Notes:
 

The TLV value is for particulate matter containing no asbestos and <1% crystalline silica.

Notes:
 

As particulates not otherwise regulated (PNOR); see also footnote (n).

Health factors:  See NIH-NLM PubChem. IDLH
 

5000 mg/m³

Carcinogenic classifications: TLV-A4 Notes:
 

 

AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:
 

 

Additional Resources and Literature References

Last Updated Date : 01/08/2021

COAL TAR PITCH VOLATILES (BENZENE-SOLUBLE FRACTION), (PYRENE, PHENANTHRENE, ACRIDINE, CHRYSENE, ANTHRACENE AND BENZO(A)PYRENE)‡

Chemical Identification

CAS # 65996-93-2
Formula

Mixture

Synonyms

coal tar pitch high temperature; oil pitch; pitch; CTPHT; coal tar distillates; other synonyms vary depending upon the specific compound (e.g., pyrene, phenanthrene, acridine, chrysene, anthracene and benzo(a)pyrene).

Physical Properties

Physical description Black viscous liquid with an odor of aromatic solvent.
Boiling point >150°F Molecular weight
Freezing point/melting point Vapor pressure depends upon the specific compound
Flash point >842°F Vapor density
Specific gravity >1.1 Ionization potential
Lower explosive limit (LEL) Upper explosive limit (UEL)
NFPA health rating NFPA fire rating
NFPA reactivity rating NFPA special instruction
Vapor hazard ratio (VHR)
Historical exceedance percentage
Target organs

Monitoring Methods Used by OSHA

Analyte code (IMIS no.) 0700
Sampling group
Sampler/Sampling media Coal Tar Pitch Volatiles (CTPV) Sampling Filters and Cassette [SLTC109]
Sampling time*

480 min

Sampling volume (TWA)*

960 L

Sampling flow rate (TWA)*

2 L/min

Sampling volume (STEL/Peak/C)*
Sampling flow rate (STEL/Peak/C)*
Analytical method instruments HPLC
Method reference OSHA 58 (fully validated)
Notes

After sampling, filter must be transferred to a vial with a teflon-lined cap. Sample must be protected from direct sunlight. If chemicals are present that may be soluble in benzene, such as sulfur, please note them on the 91A form, because additional analyses may be possible to determine the extent of interference.

Special requirements

These media are prepared by SLTC as needed and are not available for immediate shipment. Please allow time for SLTC to prepare these media prior to sampling.

* All sampling instructions above are recommended guidelines for OSHA Compliance Safety and Health Officers (CSHOs), please see the corresponding OSHA method reference for complete details.

Bulk/Wipe Method

Wipe Sampler/Sampling media
Bulk Method

On-Site Screening Techniques

Device
Model/Type
Sampling information
(see manufacturer instructions)

Exposure Limits

OSHA PEL
8-hour TWA
(ST) STEL
(C) Ceiling
Peak
NIOSH REL
Up to 10-hour TWA
(ST) STEL
(C) Ceiling
ACGIH TLV©
8-hour TWA
(ST) STEL
(C) Ceiling
CAL/OSHA PEL
8-hour TWA
(ST) STEL
(C) Ceiling
Peak
PEL-TWA

0.2 mg/m³ (benzene-soluble fraction)

REL-TWA

0.1 mg/m³ (cyclohexane-extractable fraction)

TLV-TWA

0.2 mg/m³ (benzene-soluble aerosol) [1984]

PEL-TWA

0.2 mg/m³

PEL-STEL REL-STEL TLV-STEL PEL-STEL
PEL-C REL-C TLV-C PEL-C
Skin notation

N

Skin notation

N

Skin notation

N

Skin notation

N

Notes:

See 29 CFR 1910.1000 Table Z-1 and 1910.1002 - Coal tar pitch volatiles; interpretation of term.

Notes:

CARCINOGEN (Ca). See Appendix A, NIOSH Potential Occupational Carcinogens and Appendix C, Supplementary Exposure Limits.

Notes:

BEI®

Notes:
Health factors:  See NIH-NLM PubChem. IDLH

80 mg/m³

Carcinogenic classifications: IARC-1, NIOSH-Ca, NTP-K, TLV-A1 Notes:

Ca

AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:

Additional Resources and Literature References

Last Updated Date : 01/28/2021

1,3-DIOXOLANE

Chemical Identification

CAS # 646-06-0
Formula

C₃H₆O₂

Synonyms

1,3-dioxacyclopentane; dihydro-1,3-dioxole; ethylene glycol formal; formal glycol

Physical Properties

Physical description Colorless liquid.
Boiling point Molecular weight 74.09
Freezing point/melting point Vapor pressure
Flash point Vapor density
Specific gravity Ionization potential
Lower explosive limit (LEL) Upper explosive limit (UEL)
NFPA health rating 1 NFPA fire rating 3
NFPA reactivity rating 2 NFPA special instruction
Vapor hazard ratio (VHR)
Historical exceedance percentage
Target organs

Monitoring Methods Used by OSHA

Analyte code (IMIS no.)
Sampling group
Sampler/Sampling media
Sampling time*
Sampling volume (TWA)*
Sampling flow rate (TWA)*
Sampling volume (STEL/Peak/C)*
Sampling flow rate (STEL/Peak/C)*
Analytical method instruments
Method reference
Notes
Special requirements

* All sampling instructions above are recommended guidelines for OSHA Compliance Safety and Health Officers (CSHOs), please see the corresponding OSHA method reference for complete details.

Bulk/Wipe Method

Wipe Sampler/Sampling media
Bulk Method

On-Site Screening Techniques

Device
Model/Type
Sampling information
(see manufacturer instructions)

Exposure Limits

OSHA PEL
8-hour TWA
(ST) STEL
(C) Ceiling
Peak
NIOSH REL
Up to 10-hour TWA
(ST) STEL
(C) Ceiling
ACGIH TLV©
8-hour TWA
(ST) STEL
(C) Ceiling
CAL/OSHA PEL
8-hour TWA
(ST) STEL
(C) Ceiling
Peak
PEL-TWA REL-TWA TLV-TWA

20 ppm [1997]

PEL-TWA
PEL-STEL REL-STEL TLV-STEL PEL-STEL
PEL-C REL-C TLV-C PEL-C
Skin notation

NA

Skin notation

NA

Skin notation

N

Skin notation

NA

Notes:

Not established

Notes:

Not established

Notes: Notes:

Not established

Health factors:  See NIH-NLM PubChem. IDLH
Carcinogenic classifications: Not listed Notes:
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:

Additional Resources and Literature References

Last Updated Date : 12/14/2020

1,2-PROPYLENE GLYCOL DINITRATE

Chemical Identification

CAS # 6423-43-4
Formula
 

CH₃CNO₂OHCHNO₂OH

Synonyms
 

PGDN; propylene glycol-1,2-dinitrate; 1,2-propylene glycol dinitrate

Physical Properties

Physical description Colorless liquid with a disagreeable odor.
Boiling point Molecular weight 166.1
Freezing point/melting point 18°F Vapor pressure 0.07 mmHg at 72°F
Flash point Vapor density
Specific gravity 1.23 at 77°F Ionization potential
Lower explosive limit (LEL) Upper explosive limit (UEL)
NFPA health rating NFPA fire rating
NFPA reactivity rating NFPA special instruction
Vapor hazard ratio (VHR)
Historical exceedance percentage
Target organs

Monitoring Methods Used by OSHA

Analyte code (IMIS no.)
Sampling group
Sampler/Sampling media
Sampling time*
Sampling volume (TWA)*
Sampling flow rate (TWA)*
Sampling volume (STEL/Peak/C)*
Sampling flow rate (STEL/Peak/C)*
Analytical method instruments
Method reference
Notes
Special requirements

* All sampling instructions above are recommended guidelines for OSHA Compliance Safety and Health Officers (CSHOs), please see the corresponding OSHA method reference for complete details.

Bulk/Wipe Method

Wipe Sampler/Sampling media
 

 

Bulk Method

On-Site Screening Techniques

Device
Model/Type
Sampling information
(see manufacturer instructions)

Exposure Limits

OSHA PEL
8-hour TWA
(ST) STEL
(C) Ceiling
Peak
NIOSH REL
Up to 10-hour TWA
(ST) STEL
(C) Ceiling
ACGIH TLV©
8-hour TWA
(ST) STEL
(C) Ceiling
CAL/OSHA PEL
8-hour TWA
(ST) STEL
(C) Ceiling
Peak
PEL-TWA REL-TWA

0.05 ppm (0.3 mg/m³)

TLV-TWA

0.05 ppm [1980]

PEL-TWA

0.05 ppm (0.3 mg/m³)

PEL-STEL REL-STEL TLV-STEL PEL-STEL
PEL-C REL-C TLV-C PEL-C
Skin notation

NA

Skin notation

Y

Skin notation

Y

Skin notation

Y

Notes:

Not established

Notes: Notes:

BEI®

Notes:
Health factors:  See NIH-NLM PubChem. IDLH
Carcinogenic classifications: Not listed Notes:
 

 

AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:
 

 

Additional Resources and Literature References

Last Updated Date : 12/14/2020

ACETIC ACID†

Chemical Identification

CAS # 64-19-7
Formula

C₂H₄O₂

Synonyms

acetic acid (aqueous); ethanoic acid; glacial acetic acid (pure compound); methanecarboxylic acid [Note: Can be found in concentrations of 5-8% in vinegar.]

Physical Properties

Physical description Colorless liquid or crystals with a sour, vinegar-like odor.
Boiling point 244°F Molecular weight 60.1
Freezing point/melting point 62°F Vapor pressure 11 mmHg
Flash point 103°F Vapor density
Specific gravity 1.05 Ionization potential 10.66 eV
Lower explosive limit (LEL) 4.0% Upper explosive limit (UEL) 19.9% at 200°F
NFPA health rating 3 NFPA fire rating 2
NFPA reactivity rating 0 NFPA special instruction
Vapor hazard ratio (VHR)
Historical exceedance percentage
Target organs

Monitoring Methods Used by OSHA

Analyte code (IMIS no.) 0020
Sampling group
Sampler/Sampling media CSC tube (100/50 mg) [SKC 226-01]
Sampling time*

240 min

Sampling volume (TWA)*

48 L

Sampling flow rate (TWA)*

0.2 L/min

Sampling volume (STEL/Peak/C)*
Sampling flow rate (STEL/Peak/C)*
Analytical method instruments IC
Method reference OSHA PV2119 (partially validated)
Notes

OSHA staff: Butyric and propionic acids are interferences in the acetic acid analysis. Therefore, presence of butyric and propionic acids should be noted on 91-A form.

Special requirements

* All sampling instructions above are recommended guidelines for OSHA Compliance Safety and Health Officers (CSHOs), please see the corresponding OSHA method reference for complete details.

Bulk/Wipe Method

Wipe Sampler/Sampling media

Wipe with Whatman smear tab. [WHA1450993]

Bulk Method

Available

On-Site Screening Techniques

Device Detector tube CMS Chip
Model/Type Gastec 81 Acetic Acid, 2-50 ppm range
Sampling information
(see manufacturer instructions)
0.5-2 strokes, 0.2-100 ppm range, uncertainty 0% for 2 to 10 ppm, 5% for 10 to 50 ppm

Exposure Limits

OSHA PEL
8-hour TWA
(ST) STEL
(C) Ceiling
Peak
NIOSH REL
Up to 10-hour TWA
(ST) STEL
(C) Ceiling
ACGIH TLV©
8-hour TWA
(ST) STEL
(C) Ceiling
CAL/OSHA PEL
8-hour TWA
(ST) STEL
(C) Ceiling
Peak
PEL-TWA

10 ppm (25 mg/m³)

REL-TWA

10 ppm (25 mg/m³)

TLV-TWA PEL-TWA

10 ppm (25 mg/m³)

PEL-STEL REL-STEL

15 ppm (37 mg/m³)

TLV-STEL PEL-STEL

15 ppm (37 mg/m³)

PEL-C REL-C TLV-C PEL-C

40 ppm

Skin notation

N

Skin notation

N

Skin notation

N

Skin notation

N

Notes:

See 29 CFR 1910.1000 Table Z-1.

Notes: Notes:

Visit the ACGIH TLV site for specific data

Notes:
Health factors:  See NIH-NLM PubChem. IDLH

50 ppm

Carcinogenic classifications: Not listed Notes:
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:

5 ppm/35 ppm/250 ppm

Additional Resources and Literature References

Last Updated Date : 03/27/2024

FORMIC ACID†

Chemical Identification

CAS # 64-18-6
Formula

CH₂O₂

Synonyms
 

hydrogen carboxylic acid; methanoic acid

Physical Properties

Physical description Colorless liquid with a pungent, penetrating odor.
Boiling point 224°F (90% solution) Molecular weight 46.02
Freezing point/melting point 20°F (90% solution) Vapor pressure 35 mmHg
Flash point 122°F (90% solution, open-cup) Vapor density 1.6
Specific gravity 1.22 (90% solution) Ionization potential 11.05 eV
Lower explosive limit (LEL) 18% (90% solution) Upper explosive limit (UEL) 57% (90% solution)
NFPA health rating 3 NFPA fire rating 2
NFPA reactivity rating 0 NFPA special instruction
Vapor hazard ratio (VHR)
Historical exceedance percentage
Target organs

Monitoring Methods Used by OSHA

Analyte code (IMIS no.) 1310
Sampling group
Sampler/Sampling media Sorbent tube, silica gel, specially cleaned, 7 x 110-mm size, 2 (200/400 mg sorbent) with GS ends and WWGW separators [SKC 226-10-03]
Sampling time*
 

 

Sampling volume (TWA)*
 

1-24 L

Sampling flow rate (TWA)*
 

0.05 - 0.2 L/min

Sampling volume (STEL/Peak/C)*
 

 

Sampling flow rate (STEL/Peak/C)*
 

 

Analytical method instruments IC
Method reference NIOSH 2011 (partially validated)
Notes
 

Samples requesting formic acid must be shipped to the laboratory ASAP and kept cold. 

Special requirements
 

 

* All sampling instructions above are recommended guidelines for OSHA Compliance Safety and Health Officers (CSHOs), please see the corresponding OSHA method reference for complete details.

Bulk/Wipe Method

Wipe Sampler/Sampling media
 

 

Bulk Method
 

 

On-Site Screening Techniques

Device
Model/Type
Sampling information
(see manufacturer instructions)

Exposure Limits

OSHA PEL
8-hour TWA
(ST) STEL
(C) Ceiling
Peak
NIOSH REL
Up to 10-hour TWA
(ST) STEL
(C) Ceiling
ACGIH TLV©
8-hour TWA
(ST) STEL
(C) Ceiling
CAL/OSHA PEL
8-hour TWA
(ST) STEL
(C) Ceiling
Peak
PEL-TWA
 

5 ppm (9 mg/m³)

REL-TWA
 

5 ppm (9 mg/m³)

TLV-TWA
 

5 ppm [1965]

PEL-TWA
 

5 ppm (9 mg/m³)

PEL-STEL
 

 

REL-STEL
 

 

TLV-STEL
 

10 ppm [1965]

PEL-STEL
 

10 ppm (19 mg/m³)

PEL-C
 

 

REL-C
 

 

TLV-C
 

 

PEL-C
 

 

Skin notation
 

N

Skin notation
 

N

Skin notation
 

N

Skin notation
 

N

Notes:
 

See 29 CFR 1910.1000 Table Z-1.

Notes:
 

 

Notes:
 

 

Notes:
 

 

Health factors:  See NIH-NLM PubChem. IDLH
 

30 ppm

Carcinogenic classifications: Not listed Notes:
 

 

AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:
 

3 ppm/25 ppm/250 ppm

Additional Resources and Literature References

Last Updated Date : 12/29/2020