4,4'-METHYLENEBISBENZENEAMINE

PRODUCT IDENTIFICATION
CAS NO. 101-77-9

4,4'-METHYLENEBISBENZENEAMINE

EINECS NO. 202-974-4
FORMULA CH2(C6H4NH2)2
MOL WT. 198.27

H.S. CODE

 

TOXICITY

 Oral rat LD50: 517 mg/kg
SYNONYMS Tonox; MDA; p,p'-Diaminodiphenylmethane;
4,4'-Diaminodiphenylmethane; DADPM; DAPM; Bis(P-aminophenyl)Methane; Methylenebis(Aniline); Diaminodiphenylmethane; 4,4'-Methylenedianiline;
PRICE  

CLASSIFICATION

 

PHYSICAL AND CHEMICAL PROPERTIES
PHYSICAL STATE Pale yellow crystals. Turns dark on exposure to air

MELTING POINT

88 - 92 C

BOILING POINT 398 - 399 C (Decomposes)
SPECIFIC GRAVITY 1.1

SOLUBILITY IN WATER

 Insoluble
pH 9 - 10 (10% slurry)
VAPOR DENSITY 6.8

REFRACTIVE INDEX

 

NFPA RATINGS

 Health: 3 Flammability: 1 Reactivity: 0

AUTOIGNITION

270 C

FLASH POINT

220 C

STABILITY

Stable under ordinary conditions

APPLICATIONS

Considerable quantity of aniline is converted into 4,4กฏ-methylenedianiline (MDA) by the condensation reaction of formaldehyde with aniline in the presence of hydrochloric acid. MDA is is used as an epoxy curing agent, a corrosion inhibitor and molded plastics, and as an intermediate to prepare organic compounds used for polyurethane, spandex fibers, azo dyes, isocyanates and poly(amide-imide) resins. Other important aromatic amine compound as the starting material to produce polyurethane foam production is toluenediamine (TDA). TDA is the mixture of 2,4-diaminotoluene and 2,6-diaminotoluene, usually in a ratio of 80:20. Most of TDA is used in the manufacture of toluene diisocyanate (TDI), which is the predominant diisocyanate in the flexible foams and elastomers industries. TDI reacts with an alcohol to form urethane linkages. Other applications of TDA include to produce dyes, polyamides, antioxidants, hydraulic fluids, and fungicide stabilizers. Aniline is a starting moiety to prepare plant protecting agents. Examples include fenuron (CAS RN: 101-42-8), propham (CAS RN: 122-42-9), siduron (CAS RN: 1982-49-6), carboxin (CAS RN: 5234-68-4), fenfuram (CAS RN: 24691-80-3) and propachlor (CAS RN: 1918-16-7). Aniline is processed to produce a series of compounds being used in the rubber industry, e.g. diphenylguanidines, phenylenediamines mercaptobenzothiazoles, aniline ketones and etc. There are three isomers of phenylenediamine: ortho-, meta-, and para-phenylenediamine. They are low toxic diamines used as components of plastic composites and engineering polymers. They are used to produce aramid fibers, dyes including hair dyes, rubber chemicals (vulcanization accelerators and antioxidants), and pigments.

SALES SPECIFICATION

APPEARANCE

 Pale yellow crystals turns dark on exposure to air
AMINE CONTENT

99.0% min

IMPURITY

3.0% max (isomer, aniline)

TRANSPORTATION
PACKING 25Kgs in fiber drum (9mts in container)
HAZARD CLASS 6.1 (Packing Group: III)
UN NO. 2651
OTHER INFORMATION
Hazard Symbols: T N, Risk Phrases: 20/21/22/43/45/48/51/53. Safety Phrases: 53/45/61