Professional China Dichloromethane C Nmr - Xylene structure mixture – Debon

Identification English name Xylene Molecular formulaC8H10 Molecular weight106.17

 

Dangerous goods number

33535 UN number 1307

 

IMDG rule page number

3292 CAS number 95-47-6
Physical and chemical properties

Appearance and traits

A colorless, transparent liquid with a toluene-like odor.

 

Melting point °C

-25.5

Relative density (air = 1)

3.66

 

Boiling point °C

144.4

Critical temperature °C

357.2

 

Relative density (water = 1)

0.88

Critical pressure MPa

3.70

 

Saturated vapor pressure KPa

1.33(32℃)

Combustion heat Kj/mol

4563.3

 

Minimum ignition energy mJ

——

 

Solubility

It is insoluble in water and can be miscible in most organic solvents such as ethanol, ether and chloroform.

Toxicity and hazards

Exposure limit

China MAC: 100mg/m3

 

Route of invasion

Soviet MAC: 50mg/m3

 

Health hazard

US TWA: OSHA 100ppm, 434mg/m3; ACGIH 100ppm, 434mg/m3

Burning explosion hazard

Burning explosion hazard

Flammable flash point °C 25

 

Auto-ignition temperature °C

463 Explosion limit % Lower limit 1.0, upper limit 7.0

 

Dangerous characteristics

Its steam forms an explosive mixture with air, causing a fire and explosion in case of open fire and high heat. It can react with oxidants. Its steam is heavier than air, can spread to a relatively distant place at a lower place, and ignites in case of fire. In case of high heat, the internal pressure of the container increases, posing a risk of cracking and explosion. The flow rate is too fast, and it is easy to generate and accumulate static electricity.

 

Combustion decomposition product

Carbon monoxide, carbon dioxide.

Polymerization hazard

Can’t appear

 

Stability

stable

Incompatibility

Strong oxidants

 

Fire fighting methods

Foam, carbon dioxide, dry powder, sand, fire extinguishing is not effective.
Storage and transportation considerations Store in a low-temperature ventilated place, away from fire and heat. Avoid co-preservation and transportation with oxidants. It is forbidden to use tools that are prone to sparks.
package Packaging classification II Packaging mark 7

Carbon monoxide, carbon dioxide.

Carbon monoxide, carbon dioxide.

Carbon monoxide, carbon dioxide.

first-aid

Skin contact: Remove contaminated clothing and wash skin thoroughly with soap and water.

Leakage emergency treatment

Eye contact: Lift eyelids and rinse with running water. Seek medical attention.