1-METHOXY-2-PROPANOL

Chemical Identification
CAS # 107-98-2
Formula

C₄H₁₀O₂

Synonyms

Dowtherm209®; 1-methoxy-2-hydroxypropane; 1-methoxy-2-propanol; 2-methoxy-1-methylethanol; propylene glycol methyl ether

Physical Properties
Physical description Clear, colorless liquid with a mild, ethereal odor.
Boiling point 248°F Molecular weight 90.1
Freezing point/melting point -139°F (sets to glass) Vapor pressure 12 mmHg
Flash point 97°F Vapor density 3.11
Specific gravity 0.96 Ionization potential
Lower explosive limit (LEL) 1.6% Upper explosive limit (UEL) 13.8%
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.) 2210
Sampling group
Sampler/Sampling media CSC tube (100/50 mg) [SKC 226-01]
Sampling time*

100 min

Sampling volume (TWA)*

10 L

Sampling flow rate (TWA)*

0.1 L/min

Sampling volume (STEL/Peak/C)*

3 L

Sampling flow rate (STEL/Peak/C)*

0.2 L/min

Analytical method instruments GC-FID
Method reference OSHA 99 (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.

Wipe Method
Sampler/Sampling media
Bulk Method
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

100 ppm (360 mg/m³)

TLV-TWA

50 ppm [2012]

PEL-TWA

100 ppm (360 mg/m³)

PEL-STEL REL-STEL

150 ppm (540 mg/m³)

TLV-STEL

100 ppm [2012]

PEL-STEL

150 ppm (540 mg/m³)

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

NA

Skin notation

N

Skin notation

N

Skin notation

Y

Notes:

Not established

Notes: Notes: Notes:
Health factors:  See NIH-NLM PubChem. IDLH
Carcinogenic classifications: TLV-A4 Notes:
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:

Last Updated Date : 09/22/2022