DIBUTYL PHOSPHATE†

Chemical Identification
Chemical Identification
CAS # 107-66-4
Formula

(C₄H₉O)₂(OH)PO

Synonyms

dibutyl acid o-phosphate; di-n-butyl hydrogen phosphate; dibutyl phosphoric acid

Physical Properties
Physical Properties
Physical description Pale-amber, odorless liquid.
Boiling point 212°F (decomposes) Molecular weight 210.2
Freezing point/melting point Vapor pressure 1 mmHg (approx)
Flash point Vapor density
Specific gravity 1.06 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
Monitoring Methods Used by OSHA
Analyte code (IMIS no.) 0863
Sampling group
Sampler/Sampling media PTFE filter, 1 µm [SKC 225-2705]
Sampling time*
Sampling volume (TWA)*

50-250 L

Sampling flow rate (TWA)*

1-3 L/min

Sampling volume (STEL/Peak/C)*
Sampling flow rate (STEL/Peak/C)*
Analytical method instruments GC
Method reference NIOSH 5017 (partially 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
Wipe Method
Sampler/Sampling media
Bulk Method
Bulk Method
On-Site Screening Techniques
On-Site Screening Techniques
Device
Model/Type
Sampling information
(see manufacturer instructions)
Exposure Limits
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

1 ppm (5 mg/m³)

REL-TWA

1 ppm (5 mg/m³)

TLV-TWA

5 mg/m³ (inhalable fraction and vapor) [2008]

PEL-TWA

1 ppm (5 mg/m³)

PEL-STEL REL-STEL

2 ppm (10 mg/m³)

TLV-STEL

2 ppm (17 mg/m³)

PEL-STEL

2 ppm (10 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:
Additional Resources and Literature References
Additional Resources and Literature References

NOAA: CAMEO Chemicals - Dibutyl phosphate

NIOSH: Pocket Guide to Chemical Hazards - Dibutyl phosphate

Literature References

  • ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Dibutyl phosphate. See annual publication for most recent information.

Last Updated Date : 12/22/2020