Toluene, an organic compound with the chemical formula C7H8, is a colorless, volatile liquid with a special aroma, belonging to the aromatic hydrocarbons. It has strong refraction. It can be miscible with ethanol, ether, acetone, chloroform, carbon disulfide and glacial acetic acid, and is insoluble in water. Flammable, vapor can form an explosive mixture with air, and the mixture can explode when the volume concentration is in a low range. Low toxicity, median lethal dose (rats, orally) 5000mg/kg. High concentrations of gas are anesthetic and irritating.
Toluene is an important chemical raw material, which can be used in the manufacture of spray paint, explosives, pesticides, benzoic acid, dyes, synthetic resins and polyester. Toluene is also used as a solvent and is one of the components of gasoline.
On October 27, 2017, the preliminary list of carcinogens published by the World Health Organization's International Agency for Research on Cancer was collated for reference, and toluene was in the list of 3 types of carcinogens.
Chinese name: Toluene
Foreign name: methylbenzene; Toluene
Other names: methyl benzene, phenyl methane
Chemical formula: C7H8
Molecular weight: 92.14
CAS login number: 108-88-3
EINECS entry number: 203-625-9
Melting point: -94.9 ℃
Boiling point: 110.6 ℃
Density: 0.872 g/cm³
Appearance: Colorless transparent liquid
Flash point: 4 ℃ (CC)
Security description: S16; S25; S29; S33; S36/37; S45; S46; S62
Danger symbol: T; Xn; F
Hazard description: R11; R39/23/24/25; R48/20; R63; R67
UN Dangerous Goods No. : 1294
Controlled type Easy drugs: -3
Packaging and Shipping Information
170kg*80 drum ISO TANK
13.6ton/FCL 20.5ton
Operation and Storage
Operation precautions: closed operation, strengthen ventilation. Operators must be specially trained and strictly abide by the operating procedures. It is recommended that operators wear a self-priming filter gas mask (half mask), chemical safety protective glasses, protective work clothes, and rubber oil-resistant gloves. Keep away from fire and heat. No smoking in the workplace. Use explosion-proof ventilation systems and equipment. Prevents steam from leaking into the workplace air. Avoid contact with oxidants. When filling, the flow rate should be controlled, and there is a grounding device to prevent static accumulation. When handling, light loading and unloading should be done to prevent damage to packaging and containers. Equipped with the corresponding variety and quantity of fire equipment and leakage emergency treatment equipment. Empty containers may have harmful residues.
Storage precautions: Store in a cool, ventilated warehouse. Keep away from fire and heat. The temperature of the reservoir should not exceed 30℃. Keep the container sealed. Should be stored separately from oxidizer, do not mix storage. Explosion-proof lighting and ventilation facilities are adopted. Do not use mechanical equipment and tools that are prone to spark. The storage area should be equipped with leak emergency treatment equipment and suitable containment materials.
Application
1, widely used as organic solvents and raw materials for synthetic medicine, coatings, resins, dyes, explosives and pesticides, used as chromatographic analysis standard substances and analytical reagents.
2, toluene can be used as a raw material for the production of benzene and many other chemical products. Such as paint, varnish, varnish, adhesives and ink manufacturing and tenna water formulation of thinners, resin solvents; Solvents for chemical and manufacturing applications; In particular, the two processes of extraction and degreasing are most suitable. It is also used as raw material for chemical synthesis. It can also be used as an blending component of gasoline to improve octane number, and as a solvent for paints, inks and cellulose nitrate. A series of intermediates produced from toluene, called toluene intermediates. Chemical industry is mainly used to produce benzene and xylene, its downstream main products are nitrotoluene, benzoic acid, benzyl chloride, m-cresol, toluene diisocyanate, etc., can also produce many pesticides and pharmaceutical intermediates. In addition, toluene has excellent organic solubility and is a widely used organic solvent. Toluene is easily chlorinated to form phenyl-chloromethane or phenyl-trichloromethane, both of which are good industrial solvents; It also nitrates easily to produce p-nitrotoluene or o-nitrotoluene, both of which are raw materials for dyes; It is also easily sulfonated to form o-toluenesulfonic acid or p-toluenesulfonic acid, which are used as raw materials for making dyes or saccharin. The vapor of toluene mixes with the air to form an explosive substance, so it can make Tisti explosive.
3. Plant extract. Widely used as a solvent and high octane gasoline additive.
4, used as an analytical reagent, such as solvent, extraction separation agent, chromatographic analysis reagent. It is also used as a cleaning agent and for organic synthesis such as dyes, spices and benzoic acid.
5, used to blend gasoline composition and as the production of toluene derivatives, explosives, dye intermediates, drugs and other main raw materials.
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Company Introduction
Shandong DESENLAI Chemical Co., Ltd. was established in July 2011, headquartered in Tianqiao District, Jinan City, Shandong Province.
With more than ten years of fine chemical business foundation, DSL Chemical is committed to building the most valuable chemical trading company in the whole industrial chain in China. With advanced marketing concept combined with modern management mode, the company provides customers with quality products and services and comprehensive "all-around" solutions.
The company adheres to the goal of green and sustainable development, and has long been committed to the operation of various fine chemical products, involving lithium new energy, biodegradable materials and other green energy fields. Such as NMP, butyrate, BDO, adipic acid, glycol and so on.
