1,2-ethanedisulfonic acid 1,2-ethanedisulfonic 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:110-04-3

mdl number:mfcd00069901

einecs number:203-732-0

rtecs number:none

brn number:none

pubchem id:none

physical property data

1. properties: needle-like crystals

2. solubility: soluble in ethanol and ether.

toxicological data

none yet

ecological data

none yet

molecular structure data

1. molar refractive index: 32.00

2. molar volume (cm³/mol): 198.6

3. isotonic specific volume (90.2k ): 311.5

4. surface tension (dyne/cm): 99.5

5. polarizability (10^-24cm³): 12.68

compute chemical data

1. hydrophobic parameter calculation reference value (xlogp): -2.2

2. number of hydrogen bond donors: 0

3. number of hydrogen bond acceptors: 6

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4. number of rotatable chemical bonds: 1

5. number of tautomers:

6. topological molecular polar surface area (tpsa): 114

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7. number of heavy atoms: 10

8. surface charge: -2

9. complexity: 212

10. isotopic atoms quantity: 0

11. determine the number of atomic stereocenters: 0

12. uncertain number of atomic stereocenters: 0

13. determine the chemical bond structure number of stereocenters: 0

14. number of uncertain chemical bond stereocenters: 0

15. number of covalent bond units: 1

properties and stability

it is corrosive and irritating. skin contact may cause allergic reactions. operators should wear protective equipment.

storage method

synthesis method

1,2-dichloroethane undergoes a displacement reaction with sodium sulfite to produce ethane disulfonic acid disodium salt. dissolve the sodium salt in water, pass it through an exchange column equipped with 001×7 type strongly acidic styrene-based cation exchange resin (732#) at a speed of 2.5~3kg/h, and collect the exchange liquid in sections, with ph=3~1 part containing more than 90% ethane disulfonic acid, it is concentrated under reduced pressure to remove water and becomes syrupy. dry at 100℃ to get the finished product.

purpose

pharmaceutical intermediates. used in the production of non-narcotic cough medicine cemifene.