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tert-Butanol Structure


Chemical 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
Evaporation Rate 1.05
Relative density, gas (air=1) 2.56
Viscosity 3.35 mPa @ 30°C
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
Merck  14,1542
JECFA Number 85
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.
Stability Stable. Very flammable. Incompatible with strong oxidizing agents, copper, copper alloys, alkali metals, aluminium.
LogP 0.350
Indirect Additives used in Food Contact Substances TERT-BUTYL ALCOHOL
FDA 21 CFR 175.105; 176.200; 177.1650; 178.3910
CAS DataBase Reference 75-65-0(CAS DataBase Reference)
EWG's Food Scores 2
NIST Chemistry Reference Ethanol, 1,1-dimethyl-(75-65-0)
EPA Substance Registry System tert-Butanol (75-65-0)


Signal wordDanger
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
WGK Germany  1
RTECS  EO1925000
Autoignition Temperature 896 °F
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
NFPA 704:
1 0

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