Label abbreviations descriptions

2,6-DI-TERT-BUTYL-P-CRESOL

Chemical Identification
CAS # 128-37-0
Formula
 

C₁₅H₂₄O
Synonyms
 

BHT; butylated hydroxytoluene; dibutylated hydroxytoluene; 4-methyl-2,6-di-tert-butyl phenol

Physical Properties
Physical description White to pale-yellow, crystalline solid with a slight, phenolic odor.
Boiling point 509°F Molecular weight 220.4
Freezing point/melting point 158°F Vapor pressure 0.01 mmHg
Flash point 261°F Vapor density
Specific gravity 1.05 Ionization potential
Lower explosive limit (LEL) Upper explosive limit (UEL)
NFPA health rating 2 NFPA fire rating 1
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.) 2683
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
 

10 mg/m³

 TLV-TWA
 

2 mg/m³ (inhalable fraction and vapor) [2001]

 PEL-TWA
 

10 mg/m³
PEL-STEL
 

 

 REL-STEL
 

 

 TLV-STEL
 

 

 PEL-STEL
 

 
PEL-C
 

 

 REL-C
 

 

 TLV-C
 

 

 PEL-C
 

 
Skin notation
 

NA

 Skin notation
 

N

 Skin notation
 

N

 Skin notation
 

N
Notes:
 

Not established

 Notes:
 

 

 Notes:
 

 

 Notes:
 

 
Health factors:  See NIH-NLM PubChem. IDLH
Carcinogenic classifications: TLV-A4, IARC-3 Notes:
 

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

 

Additional Resources and Literature References

Last Updated Date : 12/15/2020