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98-29-3

Name 4-tert-Butylcatechol
CAS 98-29-3
EINECS(EC#) 202-653-9
Molecular Formula C10H14O2
MDL Number MFCD00002201
Molecular Weight 166.22
MOL File 98-29-3.mol
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Chemical Properties

Appearance white to cream flakes
Melting point  52-55 °C(lit.)
Boiling point  285 °C(lit.)
density  1.049
vapor pressure  <1 hPa (25 °C)
refractive index  n20/D 1.508
Fp  >230 °F
storage temp.  Store below +30°C.
solubility  methanol: soluble1g/10 mL, clear, colorless to slightly yellow
form  powder to lump
pka 9.92±0.10(Predicted)
color  White to Light yellow to Light red
Odor at 10.00?%?in?dipropylene glycol. phenolic
Water Solubility  0.2 g/100 mL (25 ºC)
Sensitive  Hygroscopic
BRN  2043335
Exposure limits ACGIH: TWA 5 ppm (Skin)
NIOSH: TWA 5 ppm(20 mg/m3)
Contact allergens
p-tert-Butyl catechol is specially prepared by reacting the impure catechol fraction with tertiary butyl alcohol. It is used for its various properties (inhibitor of polymerization and antioxidizing agent) in the manufacture of rubber, plastics, and paints, in the preparation of petrolatum products, and as an antioxidant in oils. It may induce vitiligo.
InChIKey XESZUVZBAMCAEJ-UHFFFAOYSA-N
LogP 1.98 at 25℃
Uses
Polymerization inhibitor for styrene-butadiene and other olefins.
CAS DataBase Reference 98-29-3(CAS DataBase Reference)
NIST Chemistry Reference 1,2-Benzenediol, 4-(1,1-dimethylethyl)-(98-29-3)
EPA Substance Registry System 98-29-3(EPA Substance)
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Safety Data

Hazard Codes  C,N,T
Risk Statements 
R22:Harmful if swallowed.
R34:Causes burns.
R43:May cause sensitization by skin contact.
R21:Harmful in contact with skin.
R51/53:Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment .
R21/22:Harmful in contact with skin and if swallowed .
R39/23/24/25:Toxic: danger of very serious irreversible effects through inhalation, in contact with skin and if swallowed .
R20/21/22:Harmful by inhalation, in contact with skin and if swallowed .
R10:Flammable.
Safety Statements 
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection .
S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) .
S61:Avoid release to the environment. Refer to special instructions safety data sheet .
S24:Avoid contact with skin .
RIDADR  UN 2923 8/PG 3
WGK Germany  2
RTECS  UX1400000
Autoignition Temperature 160 °C
TSCA  Yes
HazardClass  8
PackingGroup  III
HS Code  29072900
Safety Profile
A poison by intravenous route. Moderately toxic by ingestion and skin absorption. A severe skin and eye irritant. Mutation data reported. Combustible when exposed to heat or flame. To fight fire, use Con, dry chemical, fog, mist. When heated to decomposition it emits acrid and irritating fumes
Toxicity
LD50 orally in Rabbit: 815 mg/kg LD50 dermal Rat 1331 mg/kg

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