3,5-Dichlorophenyl isocyanate

CAS NO.：34893-92-0
Empirical Formula: C7H3Cl2NO
Molecular Weight: 188.01
MDL number: MFCD00013859
EINECS: 252-276-9
SAFETY DATA SHEET (SDS)
Update Date: 2024-08-08 13:40:43

What is 3,5-Dichlorophenyl isocyanate?

Chemical properties

white to slightly yellow low melting solid

Chemical properties

The dichlorophenyl isocyanates are combustible, crystalline (sugar or sand-like) solids. In general, they are white to yellow in color, but the 1,4-dichloro-2-phenyl isomer is white to light green. Their flash points are generally .113C but that of the 1,3-dichloro-2-phenyl isomer is reported as 77C. These chemicals are insoluble in water, and some may be reactive. 1,2-dichloro-4-isomer (CAS 102-36-3) is the isomer of regulatory focus

The Uses of 3,5-Dichlorophenyl isocyanate

3,5-Dichlorophenyl isocyanate is used as an intermediate for medicine and in iprodione. It is also useful for proteomic research.

Potential Exposure

Those materials used as chemical intermediates

Shipping

UN2250 Dichlorophenyl isocyanates, Hazard Class: 6.1; Labels: 6.1-Poisonous materials.

Incompatibilities

May form explosive mixture with air. Isocyanates are highly flammable and reactive with many compounds, even with themselves. Incompatible with oxidizers (chlorates, nitrates, peroxides, permanganates, perchlorates, chlorine, bromine, fluorine, etc.); contact may cause fires or explosions. Reaction with moist air, water or alcohols may form amines and insoluble polyureas and react exothermically, releasing toxic, corrosive or flammable gases, including carbon dioxide; and, at the same time, may generate a violent release of heat increasing theconcentration of fumes in the air. Incompatible with amines, aldehydes, alkali metals, ammonia, carboxylic acids, caprolactum, alkaline materials, glycols, ketones, mercaptans, hydrides, organotin catalysts, phenols, strong acids, strong bases, strong reducing agents such as hydrides, urethanes, and ureas. Elevated temperatures or contact with acids, bases, tertiary amines, and acylchlorides may cause explosive polymerization. Contact with metals may evolve flammable hydrogen gas. Attacks some plastics, rubber, and coatings.

Waste Disposal

Combustion in an incinerator equipped with afterburner and fume scrubber

Properties of 3,5-Dichlorophenyl isocyanate

Melting point:	32-34 °C (lit.)
Boiling point:	243 °C
Density	1.38 g/mL at 25 °C (lit.)
vapor pressure	4.7-8.1Pa at 25℃
refractive index	1.6000 (estimate)
Flash point:	>230 °F
storage temp.	-20°C Freezer
solubility	decomposes
form	Low Melting Solid
color	White to slightly yellow
Water Solubility	decomposes
Sensitive	Moisture Sensitive
BRN	510282
CAS DataBase Reference	34893-92-0(CAS DataBase Reference)
NIST Chemistry Reference	3,5-Dichlorophenyl isocyanate(34893-92-0)
EPA Substance Registry System	3,5-Dichlorophenyl isocyanate (34893-92-0)

Safety information for 3,5-Dichlorophenyl isocyanate

Signal word	Danger
Pictogram(s)	Skull and Crossbones Acute Toxicity GHS06 Health Hazard GHS08 Environment GHS09
GHS Hazard Statements	H315:Skin corrosion/irritation H317:Sensitisation, Skin H319:Serious eye damage/eye irritation H330:Acute toxicity,inhalation H334:Sensitisation, respiratory H335:Specific target organ toxicity, single exposure;Respiratory tract irritation H411:Hazardous to the aquatic environment, long-term hazard
Precautionary Statement Codes	P260:Do not breathe dust/fume/gas/mist/vapours/spray. P273:Avoid release to the environment. P280:Wear protective gloves/protective clothing/eye protection/face protection. P302+P352:IF ON SKIN: wash with plenty of soap and water. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.