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Management of Hazardous Chemicals. Toluene. Toluene. It is a colorless liquid having molecular weight 92 and molecular formula C6H5CH3 It has a sweet pleasant odor. It is almost insoluble in water. Specific gravity at 15 deg.cen 0.866. Boiling point- 110 deg.cen.
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Toluene • It is a colorless liquid having molecular weight 92 and molecular formula C6H5CH3 • It has a sweet pleasant odor. • It is almost insoluble in water. • Specific gravity at 15 deg.cen 0.866. • Boiling point- 110 deg.cen. • Flash point- 7 deg.cen.
Toluene • Due to low flash point liquid toluene as well as vapor toluene are highly inflammable. • Due to low specific gravity it always floats on water. • Auto ignition temperature 422 deg. Cen.
Reactivity • Methyl group attached in benzene ring is very reactive. • In presence of catalyst it is easily chlorinated to benzyl chloride,benzal chloride and benzo tri chloride. • It does not deplete ozone layer. • It should be kept away from incompatible materials such as nitro tetra oxide,HNO3+H2SO4,Silver per chlorate to avoid explosion
Reactivity • Hazardous decomposition products are Carbon monoxide and Carbon dioxide.
Toxilogical Information • No information about human carcinogen.
Storage • It is stored in tanks under ground or above the ground with proper care of fire hazard • Storage tanks should be as per explosive licence directions.
Leakage • Leakage can be detected by electronic leakage censor device. • Censor should be fixed near the storage tanks in all direction. • Censor should be connected through hooter .
Personnel Protective Equipments • Self contained breathing apparatus. • Positive pressure(blower) hose mask. • Industrial canister type mask. • Protective clothing.
First Aid • Shift the affected person to open place. • Apply oxygen immediately. • Remove the contaminated clothing. • Plenty of water to be used for eye and skin washing. • Call a doctor if the victim is uncomfortable.
Employees Selection and Training • Toluene leakage should be handled by trained personnel only. • Training should be given to competent person only, • Training and awareness programme to be conducted frequently.
Practice Being Adopted In Lanxess • Huge quantity of Toluene 5 MT per hour is used for chlorination • This quantity can not be handled with small tanks. • Two storage tanks of 1000KL capacity are installed. • An auto cut valve is fitted in the pipeline of toluene discharge line. • In case of fire this valve will automatically be closed. .
Practice Being Adopted In Lanxess • Vent line of storage tanks are fitted with chilled water condenser. • Storage tanks are well connected to earthing pit and continuity of earthing pits are regularly checked and recorded. • Tanks are well covered by water hydrant line and water showers are fitted very close to tanks for cooling from out side • toluene leakage detectors are fitted in all the required places near storage tanks and in 4 directions.
Practice Being Adopted In Lanxess • Toluene tankers are connected with auto earthing pit censor.In case tankers are not properly earthed then hooter will start • Sampling from each compartment is done.and a composite sample is prepared for analysis. • If analysis is found o.k. then tanker is unloaded.
Practice Being Adopted In Lanxess • ToluenePipe lines are regularly checked for wall thickness and proper records are maintained. • Toluene storage tank area is always kept clean.No other combustable item is stored in this area
Practice Being Adopted In Lanxess • Training is regular practice in lanxess. • In house Mock drills are done quarterly. • Off sight mock drill is also conducted once in a year. • Records of all the trainings are maintained and considered in annual appraisal. • Annual health check is done by a competent doctor
