Home Categories Organic Chemistry Tert- butyl alcohol
A7725212

Tert- butyl alcohol , AR,≥99.0% , 75-65-0

Synonym(s):
1-Butanol;TBA;tert-Butanol;Butyl alcohol;2-Methyl-2-propanol

CAS NO.:75-65-0

Empirical Formula: C4H10O

Molecular Weight: 74.12

MDL number: MFCD00004464

EINECS: 200-889-7

Update time: 2022-07-08

PRODUCT Properties

Melting point: 23-26 °C (lit.)
Boiling point: 83 °C (lit.)
Density  0.775 g/mL at 25 °C (lit.)
vapor density  2.55 (vs air)
vapor pressure  31 mm Hg ( 20 °C)
refractive index  n20/D 1.399(lit.)
Flash point: 95 °F
storage temp.  Store at +5°C to +30°C.
solubility  water: miscible
pka 19(at 25℃)
form  Liquid After Melting
color  APHA: ≤20
Relative polarity 0.389
Odor Characteristic; camphor-like; pungent.
PH Range 7
Odor Threshold 4.5ppm
explosive limit 2.3-8.0%(V)
Water Solubility  soluble
λmax λ: 215 nm Amax: 1.00
λ: 230 nm Amax: 0.50
λ: 250 nm Amax: 0.20
λ: 300-350 nm Amax: 0.01
JECFA Number 85
Merck  14,1542
BRN  906698
Henry's Law Constant 1.22 at 25 °C (static headspace-GC, Merk and Riederer, 1997)
Exposure limits TLV-TWA 300 mg/m3 (100 ppm) (ACGIH); IDLH 8000 ppm.
Dielectric constant 7.8(19℃)
Stability: Stable. Very flammable. Incompatible with strong oxidizing agents, copper, copper alloys, alkali metals, aluminium.
InChIKey DKGAVHZHDRPRBM-UHFFFAOYSA-N
LogP 0.350
CAS DataBase Reference 75-65-0(CAS DataBase Reference)
NIST Chemistry Reference Ethanol, 1,1-dimethyl-(75-65-0)
EPA Substance Registry System tert-Butanol (75-65-0)

Description and Uses

tert-Butanol can be used as a solvent (e.g., for paints, lacquers, and varnishes); as a denaturant for ethanol and several other alcohols; as an octane booster in gasoline; as a dehydrating agent; as a chemical intermediate in the manufacturing of methyl methacrylate; and in the manufacturing of flotation agents, fruit essences, and perfumes.

Safety

Symbol(GHS) 
GHS02,GHS07
Signal word  Danger
Hazard statements  H225-H319-H332-H335-H336
Precautionary statements  P210-P233-P240-P241-P304+P340+P312-P305+P351+P338
Hazard Codes  Xn,F,T
Risk Statements  11-20-39/23/24/25-23/24/25-36/37
Safety Statements  9-16-45-36/37-7-46-26
RIDADR  UN 1120 3/PG 3
OEB A
OEL TWA: 100 ppm (300 mg/m3), STEL: 150 ppm (450 mg/m3)
WGK Germany  1
RTECS  EO1925000
Autoignition Temperature 896 °F
TSCA  Yes
HazardClass  3
PackingGroup  II
HS Code  29051410
Hazardous Substances Data 75-65-0(Hazardous Substances Data)
Toxicity LD50 orally in rats: 3.5 g/kg (Schaffarzick, Brown)
IDLA 1,600 ppm

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