sodium thioglycolate

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:367-51-1

MDL number:MFCD00043386

EINECS number:206-696-4

RTECS number:AI7700000

BRN number:4569109

PubChem number:24899901

Physical property data

1. Physical property data

Characteristics: White crystal. Deliquescent. Slightly special smell.

Density (g/mL, 25/4℃): Not available

Relative vapor density (g/mL, Air=1): Not available

Melting point (ºC): >300

Boiling point (ºC, normal pressure): Not available

p>

Boiling point (ºC, 5.2kPa): Not available

Refractive index: Not available

Flash Point (ºC): Not available

Specific rotation (º): Not available

Autoignition point or ignition temperature (ºC): Not available

Vapor pressure (kPa, 25ºC): Not available

Saturated vapor pressure (kPa, 60ºC): Not available

Heat of combustion (KJ/mol): Not available

Critical temperature (ºC): Not available

Critical pressure (KPa): Not available

Log value of oil-water (octanol/water) partition coefficient: Not available

Explosion upper limit (%, V/V): Not available

Lower explosion limit (%, V/V): Not available

Solubility:Easily soluble in water, slightly soluble in ethanol. It will change color when exposed to air or exposed to iron. If the color turns yellow or black, it has deteriorated and cannot be used.

Toxicological data

2. Toxicological data:

Acute toxicity: LD50 (rat, abdominal cavity) LD50: 148mg/kg. Irritating

Ecological data

Water hazard class 1 (German Regulation) (self-assessment via list) The substance is slightly hazardous to water.

Do not allow undiluted or large amounts of product to come into contact with groundwater, waterways or sewage systems.

Do not discharge materials into the surrounding environment without government permission.

Molecular structure data

None yet

Compute chemical data

1. Reference value for hydrophobic parameter calculation (XlogP): None

2. Number of hydrogen bond donors: 1

3. Number of hydrogen bond acceptors: 3

4. Number of rotatable chemical bonds: 1

5. Number of tautomers: none

6. Topological molecule polar surface area 41.1

7 .Number of heavy atoms: 6

8. Surface charge: 0

9. Complexity: 46.8

10. Number of isotope atoms: 0

11. Determine the number of atomic stereocenters: 0

12. Uncertain number of atomic stereocenters: 0

13. Determine the number of chemical bond stereocenters: 0

14. Number of uncertain chemical bond stereocenters: 0

15. Number of covalent bond units: 2

Properties and stability

Basic properties

It has a slight special smell, and it has a slight smell when it is first made. Hygroscopic. It will change color when exposed to air or exposed to iron. If the color turns yellow or black, it has deteriorated and cannot be used again. Irritating

Storage method

Should be stored sealed and dry at 4°C away from light.

Synthesis method

1. Cool the pre-filtered thioglycolic acid to 5℃, and slowly add 40% sodium hydroxide with a temperature below 5℃ while stirring. When the temperature of the solution reaches 35°C, hydrogen sulfide gas begins to escape. When the solution turns pink and stable crystals precipitate, stop adding sodium hydroxide:

Cool to room temperature, filter and crystallize Soak in ethanol, then wash until colorless, and dry below 80°C to get the finished product.

Purpose

1. Bacterial culture medium. Conduct iron test.

2. Determination of analytical reagents, such as iron, molybdenum, silver, tin, etc. Prepare bacterial culture medium.

3. Used as analytical reagents, such as masking agents. Also used for culture medium preparation.