Changzhou Junchi Chemical Co., Ltd.

Chinese synonym: mixed cresol; CRESOL; CRESOL (mixture of isomers); methyl methyl phenol; phenol; CRESOL; TarAcids creosotes; oleic acid

English Name: Cresol

English synonyms: acedecresylique; acidecresylique; acidecresylique (French); ar-toluenol; bacillol; coaltarphenols; cresoli; Cresols

CAS: 1319-77-3

Molecular formula: C7H8O

Molecular weight: 108.14

EINECS: 215-293-2

Related categories: aromatics; organic blocks; general reagents; phenol; other food testing standards; small molecule inhibitors

Mol file: 1319-77-3.mol

Cresol property

Melting point -1--2 degree C

Boiling point 88-94 C

Density 1.04

Flash point 82 C

Storage conditions Store at R.T.

The water solubility was 1.932 g/100 mL

Merck 2579

Stability Stable. Combustible. Incompatible with strong oxidizing agents.

CAS database 1319-77-3 (CAS DataBase Reference)

EPA chemical information Phenol, methyl- (1319-77-3)

Use and synthesis of cresol

Chemical properties colorless, light yellow or pink liquid. Smell of phenol. Soluble in ethanol, ethylene glycol and dilute lye.

Uses are used as raw materials for synthetic resins, insulating paints, antioxidants, and as disinfectants and solvents

For phenolic resin, electrical insulating paint, tricresyl phosphate, dye, surfactant, flotation agent, lubricating oil additives, preservatives, cold enamel solvent, plasticizer, cracking dispersing agent and sebacic acid in the production process of solvent etc.. Cresol sterilization force is 4 times of phenol, usually with soap water emulsion in mixed cresol, namely Lysol disinfectant. The separation of cresol, O, and cresol, including mixtures of meta cresol, is widely used in organic synthesis.

Use solvent, antiseptic, bactericidal capacity is 4 times of carbolic. Synthetic resin.

There are many methods for the production of cresol, and the content of isomers in the products obtained by various methods is different. 1. toluene sulfonation method is similar to the process of benzene sulfonation to phenol. Toluene sulfonate was obtained by sulfonation of toluene and sodium hydroxide was used to treat the fused sulfonated material. The mixture of sodium salt and water is obtained by adding sulfur dioxide or adding sulfuric acid to obtain cresol. After removing the moisture of crude cresol at low vacuum, the mixed cresol was obtained at 150-200 DEG C at the vacuum degree of (80-93.3kPa). The ratio of three isomers of adjacent, inter - and pairs varied with reaction conditions. The production method of cresol mixture of toluene consumption per ton 1374kg, 30% yard more than 5000 kg. 2. methyl isopropyl benzene oxidation method which is using the United States Hegelisi explosives company. Toluene was alkylated with propene to obtain a mixture of methyl benzene and cumene with a ratio of 2.5-3:1 to a pair of isomers, with few ortho isomers. At the same time, the oxidation of methyl cumene to methyl isopropyl hydroperoxide was carried out at 25-35 DEG C, and then methyl alcohol was treated with sulfuric acid to obtain cresol rich in para and para isomer, and acetone was produced simultaneously. This process is similar to cumene process for producing phenol and acetone. 3. coal tar fractionation is obtained by fractionation of crude phenols from high temperature coking byproducts.

Category corrosion goods

Toxic grading poisoning

Acute toxicity was taken orally - rat LD50: 1454 mg / kg; oral - mouse LD50: 760 mg / kg

Explosive hazard and air mixture explosion; corrosive skin, cornea

Flammable hazardous properties flammable; heated release of stimulated gas

Storage and transportation characteristics, warehouse ventilation, low temperature drying, and separate storage with oxidants.

Fire extinguishing agent dry powder, carbon dioxide, foam, fog water

Occupational standard TLV-TWA 5 PPM (22 mg / m3)

security information

Dangerous goods sign T

Dangerous category code 20-24/25-34-52/53-68

Security instructions 26-36/37/39-45-61-24/25

Dangerous goods transport number UN 2076 6.1/PG 2

WGK Germany 1

RTECS GO5950000

F 8-23

HazardClass 6.1 (a)

PackingGroup II

Toxic substances data 1319-77-3 (Hazardous Substances Data)