4-tert-Butylcatechol (TBC)

4-tert-Butylcatechol (TBC) is an organic chemical compound which is a derivative of catechol. It is added as a stabilizer and an inhibitor of polymerization to butadiene, styrene, vinyl acetate and other reactive monomer streams. It is 25 times better than hydroquinone at 60°C for polymerization inhibitory effect. Also used as a stabilizer in the manufacture of polyurethane foam. It also can be used as an antioxidant for synthetic rubber, polymers and oil derivatives. It can be used as purification agent for aminoformate catalysts. TBC is available in a form of a solid crystal and 85% solution in methanol or water.

Product Description:

English name: 4-tert-Butylcatechol

CAS number: 98-29-3

Molecular formula: C10H14O2

Molecular weight: 166.22

EINECS number: 202-653-9

MDL No. : MFCD00002201

Stats

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

Flash point >230 °F

Storage conditions Store below +30°C.

Solubility methanol: soluble1g/10 mL, clear, colorless to slightly yellow

Acidity coefficient (pKa)9.92±0.10(Predicted)

Form powder to lump

Color White to Light yellow to Light red

Odor at 10.00? %? in? dipropylene glycol. phenolic

Water solubility 0.2g /100 mL (25 ºC)

Sensitivity Hygroscopic

BRN2043335

Exposure limit ACGIH: TWA 5 ppm (Skin)

NIOSH: TWA 5 ppm(20 mg/m3)

InChIKeyXESZUVZBAMCAEJ-UHFFFAOYSA-N

LogP1.98 at 25 ° C

Safety information

hazard symbol (GHS)GHS hazard pictogramsGHS hazard pictogramsGHS Hazard pictogramgrams

GHS05,GHS07,GHS09

Danger

Hazard Description H302+H312-H314-H317-H410

Precautions P260-P273-P280-P301+P312-P303+P361+P353-P305+P351+P338

Dangerous Goods Mark C,N,T

Danger category code 22-34-43-21-51/53-21/22-39/23/24/25-20/21/22-10-50/53

Safety Instructions 26-36/37/39-45-61-24-60

Dangerous Goods Transport Code UN 2923 8/PG 3

WGK Germany2

RTECS number UX1400000

Spontaneous combustion temperature 160 °C

TSCAYes

Danger level 8

Packaging Category III

Customs Code 29072900

LD50 orally in Rabbit: 815 mg/kg LD50 dermal Rat 1331 mg/kg