SJZ Chenghui chemical co ltd
Classification: Substituted Benzenes
Grade Standard: Industrial Grade
Purity: 99% Min
Moisture: 0.5% Max
Free Aniline: 0.02% Max
Water Insoluble Matter: 0.1% Max
Productivity: 20000 mts per year
Place of Origin: China
Supply Ability: 20000 mts
Certificate: ISO 9002
Methods of Manufacturing
By heating aniline with weak fuming sulfuric acid and pouring the reaction product into water. /Monohydrate/Readily prepared from aniline and sulfuric acid.
Equimolar amounts of aniline and sulfuric acid are reacted in a lead-lined reactor. The reaction mass is spread on trays and baked in an oven at 190 - 220 deg C, the water of the reaction being removed continuously. The process is complete if a sample dissolves clearly in a dilute alkaline solution and has practically no smell of aniline. The crude product is dissolved as a sodium salt in water that has been rendered alkaline with sodium carbonate solution; traces of aniline are removed by blowing with steam. The solution is clarified by filtration and can then be processed further immediately. The baking operation can be carried out in vacuo, which facilitates the removal of the water of the reaction
Specs: Appearance:Grey-white powder
Purity: 99% min
Content 80% Min (wet) 96% Min (dry)
Insoluble 0.1% Max (wet) 0.2% Max (dry)
Para Cresidine 0.02% Max (wet) 0.02% Max (dry)
1. It is one important dyes intermediates, it can be used in Acid orange ,Acid light yellow 2G,Acid intermediary yellowish brown 4G,Acid intermediary dark yellow GG, Direct yellow GR,Reactive yellow K-RN, Brilliant red K-2G, datish red K-DG and blue K-3R, etc.
2. It also can be used in production of dyes Whitening agent, such as solute salt B, Optical Brightener BG, optical brightener BBU, dyeing proof salt H, etc.
3. It is also used in agriculture pesticide to proof wheat rust.
4. It is also one ideal intermediary in spices, food pigment, medicine, building materials, etc.
We have been exporting this item for more than 15 years, our main market is Europe and South America, also some quantity in Asia market.
Product Categories : Organic Intermediate