4-METHOXYPHENOL

PRODUCT IDENTIFICATION
CAS NO. 150-76-5

4-METHOXYPHENOL

EINECS  NO. 205-769-8
FORMULA CH3OC6H4OH
MOL WT. 124.14

H.S. CODE

 

TOXICITY

 Oral rat LD50: 1600 mg/kg
SYNONYMS p-Hydroxyanisole; p-Methoxyphenol;
Hydroquinone monomethyl ether; Mono Methyl Ether Hydroquinone; Mequinol;
PRICE  

CLASSIFICATION

 

PHYSICAL AND CHEMICAL PROPERTIES
PHYSICAL STATE white flake

MELTING POINT

 53 C
BOILING POINT 243 C
SPECIFIC GRAVITY 1.55

SOLUBILITY IN WATER

 Soluble
pH  
VAPOR DENSITY 4.29

REFRACTIVE INDEX

 

NFPA RATINGS

Health: -, Flammability: 1, Reactivity: 0

AUTOIGNITION

 

FLASH POINT

133

STABILITY Stable under ordinary conditions

APPLICATIONS
It is used as an inhibitor in vinyl and acrylic monomers, especially for clear products and as an antioxidant. It is used as a stabilizer to inhibit peroxide formation in ethers, chlorinated hydrocarbons and ethyl cellulose. It is also used as an intermediate to manufacture other stabilizers, dyes, pharmaceuticals and plasticizers.
SALES SPECIFICATION

APPEARANCE

 white flake
ASSAY

99.0% min

WATER

0.2% max

TRANSPORTATION
PACKING 250kgs in drum
HAZARD CLASS not regulated
UN NO.  
REMARKS (DESCRIPTION OF QUINONE)

Quinone is a group of aromatic compounds containing two opposite carbonyl groups (C=O) and the other two pairs of carbon atoms linked by vinylene group(-CH=CH) in a six-membered unsaturated ring. The carbonyl groups are located in different rings and form various chemical structures which offer important roles to colours. Quinones are used in photography and dye manufacture. Quinones occur benzoquinones, naphthoquinones, anthraquinones, and polycyclic quinones. Though quinones are found in plants and in a few animals, they usually are prepared by oxidation of aromatic amines, polyhydric phenols, and polynuclear hydrocarbons.The reduction of quinone to the corresponding dihydroxy form is an important characteristic reaction. In acidic solution, p-benzoquinone is reduced reversibly to hydroquinone. The so-called quinhydrone electrode, containing equimolar solution of quinone and hydroquinone, is used to determine hydrogen ion concentrations depends on the oxidation-reduction reactions. Hydroquinone and its derivatives used principally in photographic dye chemicals, in medicine, as an antioxidant, and in paints, varnishes, and motor fuels and oils. Hydroquinone and certain derivatives are also used as polymerization inhibitors by direct reacting with peroxy-free radical to tie up free radicals.