Dithiooxamide Dithiooxamide

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:79-40-3

MDL number:MFCD00004941

EINECS number:201-203-9

RTECS number:RP1575000

BRN number:605577

PubChem number:24867415

Physical property data

1. Character: red crystal or crystalline powder

2. Density (g/mL, 25/4℃): Uncertain)

3. Relative vapor density ( g/mL, air=1): Uncertain

4. Melting point (ºC): 41℃, decomposes at 200℃.

5. Boiling point (ºC, normal pressure): Uncertain

6. Boiling point (ºC, 5.2kPa): Uncertain

7. Refractive index: Uncertain

8. Flash point (ºC): Uncertain

9. Specific rotation (º): Uncertain

10. Autoignition point or ignition Combustion temperature (ºC): Uncertain

11. Vapor pressure (kPa, 25ºC): Uncertain

12. Saturated vapor pressure (kPa, 60ºC): Uncertain

13. Heat of combustion (KJ/mol): Uncertain

14. Critical temperature (ºC): Uncertain

15. Critical pressure (KPa): Uncertain

16. Log value of oil-water (octanol/water) partition coefficient: Uncertain

17. Explosion upper limit (%, V/V): Uncertain

18 . Lower explosion limit (%, V/V): Uncertain 19. Solubility: Soluble in alcohol and concentrated sulfuric acid and turns red. Slightly soluble in water, insoluble in ether

Toxicological data

1. Acute toxicity

Rat caliber LD50: 500mg/kg; mouse caliber LC50: 350mg/kg;

Rat abdominal LD50: 100mg/kg; Rat intravenous LD50: 56mg/kg;

Ecological data

None yet

Molecular structure data

1. Molar refractive index: 32.96

2. Molar volume (cm³/mol): 78.8

3. Isotonic specific volume (90.2K ): 262.8

4. Surface tension (dyne/cm): 123.3

5. Polarizability (10^-24cm³): 13.06

Compute chemical data

1. Reference value for hydrophobic parameter calculation (XlogP): -0.4

2. Number of hydrogen bond donors: 2

3. Number of hydrogen bond acceptors: 2

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4. Rotatable ChemistryNumber of bonds: 0

5. Number of tautomers: 3

6. Topological molecule polar surface area 116

7. Number of heavy atoms: 6

8. Surface charge: 0

9. Complexity: 75.5

10. Number of isotope atoms: 0

11. Determine Number of atomic stereocenters: 0

12. Uncertain number of atomic stereocenters: 0

13. Determined number of chemical bond stereocenters: 0

14 .The number of uncertain chemical bond stereocenters: 0

15. The number of covalent bond units: 1

Properties and stability

In ammonia solution with Co²⁺, Ni²⁺ Pd²⁺ , Cu²⁺, Fe³⁺ and others form water-insoluble colored complexes.

Storage method

This product should be sealed and stored in a cool place.

Synthesis method

1. Add concentrated ammonia water to concentrated copper sulfate solution while stirring until the precipitated copper hydroxide is redissolved. After cooling, slowly add potassium cyanide solution with constant stirring until the blue color disappears. Then hydrogen sulfide gas produced by the reaction of sodium sulfide and hydrochloric acid is passed into the reaction liquid. Control hydrogen sulfide: cyanide gas = 3: 1, stir evenly, cool completely, let it stand, and filter. The obtained crystals are washed with cold water and recrystallized with ethanol to obtain the finished product
Dithiooxamide. The process reaction formula is as follows:

Purpose

1. Precipitating agent for determination of copper, cobalt and nickel. Drop test reagents for bismuth, cobalt, copper, nickel, platinum and palladium. Stabilizer for vitamin C solutions.