p-TOLYL ISOCYANATE

PRODUCT IDENTIFICATION
CAS NO. 622-58-2

p-TOLYL ISOCYANATE
EINECS NO.

210-743-4
FORMULA CH3C6H4NCO
MOL WT. 133.15

H.S. CODE

 2929.10 

TOXICITY

 
SYNONYMS Isocyanic acid p-tolyl ester; p-Methylphenyl isocyanate;
1-Isocyanato-4-methylbenzene; 4-Isocyanatotoluene; 4-Methylphenyl Isocyanate; 4-Tolyl Isocyanate; o-Tolyl isocyanate; p-Isocyanatotoluene; p-Toluene isocyanate; 4-Isocyanato-1-methylbenzene;
SMILES

 

CLASSIFICATION

  

PHYSICAL AND CHEMICAL PROPERTIES
PHYSICAL STATE

clear to pale yellow  liquid

MELTING POINT  
BOILING POINT 70 - 72 C (at 10 mmHg )
SPECIFIC GRAVITY 1.056
SOLUBILITY IN WATER

 
pH  
VAPOR DENSITY

4.59

REFRACTIVE INDEX

  
AUTOIGNITION

1.5311
NFPA RATINGS  
FLASH POINT

66 C
STABILITY

Stable under ordinary conditions. Moisture sensitive.

APPLICATIONS
Cyanic acid (the isomer of fulminic acid) is an unstable (explosive), poisonous, volatile, clear liquid with the structure of H-O-C¡ÕN (the oxoacid formed from the pseudohalogen cyanide), which is readily converted to cyamelide and fulminic acid. There is another isomeric cyanic acid with the structure of H-N=C=O, called isocyanic acid. Cyanate group (and isocyanate group) can react with itself. Cyanuric acid (also called pyrolithic acid), white monoclinic crystal with the structure of [HOC(NCOH)2N], is the trimer of cyanic acid. The trimer of isocyanic acid is called biuret.
  • Cyanic acid: H-N=C=O or H-O-C¡ÕN
  • Fulminic acid: (H-C=N-O) or H-C¡ÕN-O
  • Isocyanic acid: H-N=C=O
  • Cyanuric acid: HOC(NCOH)2N
  • Biuret: (NH2)CO)2 NH

Cyanic acid hydrolyses to ammonia and carbon dioxide in water. The salts and esters of cyanic acid are cyanates. But esters of normal cyanic acid are not known. The salts and esters of isocyanic acid are isocyanates. The isocyanate group reacts with the hydroxyl functional group to form a urethane linkage. Diisocyanates (or polyisocyanates) are monomers for polyurethane production. Polyurethane is made from a variety of diisocyanates in conjunction with polyether and polyester polyols as co-reactants by addition polymerization which needs at least two -N=C=O groups. Polyurethanes are widely used in the manufacture of flexible and rigid foams, fibres, coatings, and elastomers. If isocyanate monomer is polymerized with amine group, polyurea is produced. Cyanates (or Isocyanates) are readily reacts with various form of amine (including ammonia, primary-, secondary-amines, amides and ureas) and hydroxyl functional group. They are used in the synthesis for the target molecules such as pharmaceuticals, pesticides, textile softener, lubricants and industrial disinfectants. They can convert to polycyclic compounds such as hydantoins and imidazolons. They are used as plastic additives and as heat treatment salt formulations for metals. p-Tolyl Isocyanate is used as an Intermediate mainly for the manufacture of agrochemicals.
SALES SPECIFICATION

APPEARANCE

clear to pale yellow  liquid

ASSAY (GC)

99.0%
Chloride

0.3% max
TRANSPORTATION
PACKING

200kgs in drum
HAZARD CLASS 6.1 ( Packing Group: II)
UN NO. 2206
OTHER INFORMATION
 Hazard Symbols: T; Risk Phrases: 23-22-36/37/38-42; Safety Phrases: 23-26-36/37/39-45