2,4-dinitrophenylsulfonic acid

structural formula

• numbering system
• physical property data
• toxicological data
• ecological data
• molecular structure data
• computing chemical data
• more
  • properties and stability
  • storage method
  • synthesis method
  • purpose

numbering system

cas number:89-02-1

mdl number:mfcd00066017

einecs number:201-876-9

rtecs number:db6500000

brn number:none

pubchem number:24879598

physical property data

1. characteristics: this product contains crystallization of three molecules of water

2. density ( g/ml,25/4℃) : undetermined

3. relative vapor density (g/ml,air=1): undetermined

4. melting point ( ºc): 106-108℃; melting point of anhydrous matter130℃

5. boiling point ( ºc,normal pressure): undetermined

6. boiling point ( ºc,5.2kpa): undetermined

7. refractive index: undetermined

8. flashpoint (ºc): undetermined

9. specific optical rotation (º): undetermined

10. autoignition point or ignition temperature (ºc): not ok

11. vapor pressure (kpa,25ºc): undetermined

12. saturation vapor pressure (kpa,60ºc): undetermined 12、uncertain number of stereocenters: 0

13 , determine the number of stereocenters of chemical bonds: 0

14 , uncertain number of chemical bond stereocenters: 0

15 , number of covalent bond units: 1

properties and stability

none

storage method

this product should be sealed and stored in a cool, dry place away from light.

synthesis method

by2,4-dinitrochlorobenzene is obtained by sulfonation. will1100ladd water into the sulfonation pot and heat to50℃, add with rapid stirring119kglight magnesium oxide. stir for a while and then add 750kg750kgmolten2,4-dinitrochlorobenzene, continue heating to65℃4hadd within462kgsodium bisulfite solution (formulated4.5-5nconcentration). after the reaction is completed, cool to 55℃. add hydrochloric acid to acidify, then add 35kgrefined salt, cool to20℃, let it stand and filter to get the product. products are generally sold in 2,4-forms of sodium dinitrobenzene sulfonate.

purpose

this product is a dye intermediate.

family: arial”>molten2,4-dinitrochlorobenzene, continue to heat to 65℃, in4hadd within462kgsodium bisulfite solution (made into 4.5-5nconcentration). after the reaction is completed, cool to 55℃. add hydrochloric acid to acidify, then add 35kgrefined salt, cool to20℃, let it stand and filter to get the product. products are generally sold in 2,4-forms of sodium dinitrobenzene sulfonate.

purpose

this product is a dye intermediate.