Question

write about ignition temperature and coal tar​

Answer 1

Answer:

Flash point: >200°C o.c.. Auto-ignition temperature: > 500°C Octanol/water partition coefficient as log Pow: 6.04. Electrical conductivity: 1.7x10e-9 pS/m (at 30°C, ...

Auto-ignition temperature: >500°C

Melting point: 30-180°C

Boiling point: >250°C

Density: >1 g/cm3

Explanation:

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Answer 2

Answer:

The ignition temperature of a substance is the least temperature at which the substance starts combustion. Substances which spontaneously ignite in a normal atmosphere at naturally ambient temperatures are termed pyrophoric

Coal tar is a thick black liquid which is a by-product of the production of coal gas and coke. It contains benzene, naphthalene, phenols, aniline, and many other organic chemicals. Coal tar is used for medical and industrial purposes.