2,6-Dichlorophenyl isocyanate
- CAS NO.:39920-37-1
- Empirical Formula: C7H3Cl2NO
- Molecular Weight: 188.01
- MDL number: MFCD00002003
- EINECS: 254-699-4
- SAFETY DATA SHEET (SDS)
- Update Date: 2023-04-23 13:52:06
What is 2,6-Dichlorophenyl isocyanate?
Chemical properties
white to yellow crystalline mass
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 2,6-Dichlorophenyl isocyanate
2,6-Dichlorophenyl isocyanate has been used in the preparation of pyridine-urea analog.
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 2,6-Dichlorophenyl isocyanate
Melting point: | 43-45°C |
Boiling point: | 101°C 5mm |
Density | 1,015 g/cm3 |
refractive index | 1.5500 (estimate) |
Flash point: | 76 °C |
solubility | soluble in Toluene |
form | powder to lump to clear liquid |
color | White or Colorless to Almost white or Almost colorless |
Water Solubility | decomposes |
Sensitive | Moisture Sensitive |
BRN | 608323 |
CAS DataBase Reference | 39920-37-1(CAS DataBase Reference) |
EPA Substance Registry System | Benzene, 1,3-dichloro-2-isocyanato- (39920-37-1) |
Safety information for 2,6-Dichlorophenyl isocyanate
Signal word | Danger |
Pictogram(s) |
Skull and Crossbones Acute Toxicity GHS06 Health Hazard GHS08 |
GHS Hazard Statements |
H300:Acute toxicity,oral H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H330:Acute toxicity,inhalation H334:Sensitisation, respiratory H335:Specific target organ toxicity, single exposure;Respiratory tract irritation |
Precautionary Statement Codes |
P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P280:Wear protective gloves/protective clothing/eye protection/face protection. P311:Call a POISON CENTER or doctor/physician. P320:Specific treatment is urgent (see … on this label). P330:Rinse mouth. P301+P310:IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician. P304+P340:IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. P405:Store locked up. |
Computed Descriptors for 2,6-Dichlorophenyl isocyanate
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