NIOSH Publication No. 2005-151:

NIOSH Pocket Guide to Chemical Hazards

September 2005

2,6-Di-tert-butyl-p-cresol

CAS
128-37-0

[C(CH3)3]2CH3C6H2OH

RTECS
GO7875000
Synonyms & Trade Names

BHT; Butylated hydroxytoluene; Dibutylated hydroxytoluene; 4-Methyl-2,6-di-tert-butyl phenol
DOT ID & Guide

Exposure
Limits

NIOSH REL: TWA 10 mg/m3
OSHA PEL: none
IDLH
N.D. See: IDLH INDEX
Conversion
Physical Description
White to pale-yellow, crystalline solid with a slight, phenolic odor. [food preservative]
MW: 220.4
BP: 509°F
MLT: 158°F
Sol: 0.00004%
VP: 0.01 mmHg
IP: ?

Sp.Gr: 1.05
Fl.P: 261°F
UEL: ?
LEL: ?

Class IIIB Combustible Liquid: Fl.P. at or above 200F.
Incompatibilities & Reactivities

Oxidizers
Measurement Methods
NIOSH P&CAM226 (II-1); OSHA PV2108
See: NMAM or OSHA Methods
Personal Protection & Sanitation
(See protection)
Skin: Prevent skin contact
Eyes: Prevent eye contact
Wash skin: When contaminated
Remove: When wet or contaminated
Change: Daily

First Aid
(See procedures)
Eye: Irrigate immediately
Skin: Soap wash
Breathing: Fresh air
Swallow: Medical attention immediately
Respirator Recommendations
Not available.
Important additional information about respirator selection
Exposure Routes
inhalation, ingestion, skin and/or eye contact
Symptoms
Irritation eyes, skin; in animals: decreased growth rate, increased liver weight
Target Organs
Eyes, skin
See also: INTRODUCTION   See ICSC CARD: 0841