sodium salicylate – Pu catalyst

Structural formula

Business number	016A
Molecular formula	C7H5NaO3
Molecular weight	160.1
label	Sodium o-hydroxybenzoate, 2-Hydroxybenzoic acid monosodium salt, sodium salicylate, Sodium Cylate, Sodium 2-Hydroxybenzoate, 2-Hydroxybenzoic acid sodium salt, Salicylic acid sodium salt, preservative

Numbering system

CAS number:54-21-7

MDL number:MFCD00002440

EINECS number:200-198-0

RTECS number:VO5075000

BRN number:3732792

PubChem number:24899540

Physical property data

1. Properties: White scaly crystals or powder. Odorless. It turns pink when exposed to light.

2. Density (g/mL, 25/4℃): Undetermined

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

4. Melting point (ºC): 160～166

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

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

7. Refractive index: Undetermined

8. Flash point (ºC): Undetermined

9. Specific rotation (º): Undetermined Determined

10. Autoignition point or ignition temperature (ºC): Not determined

11. Vapor pressure (kPa, 25ºC): Not determined

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

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

14. Critical temperature (ºC): Undetermined

15. Critical pressure (KPa): Undetermined

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

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

18. Lower explosion limit (%, V/V): Undetermined

19. Solubility: Easily soluble in water, ethanol, and glycerin. Almost insoluble in ether, chloroform and benzene. 1g product is dissolved in 0.9ml water, 9.2ml ethanol and 4ml glycerol. The aqueous solution is slightly acidic, with a pH of 5 to 6.

Toxicological data

Ecological data

None

Molecular structure data

None

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: 4

6. Topological molecule polar surface area 60.4

7. Number of heavy atoms: 11

8. Surface charge: 0

9. Complexity: 138

10. Number of isotope atoms: 0

11. Determine the atomic stereocenter Quantity: 0

12. Uncertain number of stereocenters of atoms: 0

13. Determined number of stereocenters of chemical bonds: 0

14. Uncertain chemical bonds Number of stereocenters: 0

15. Number of covalent bond units: 2

Properties and stability

1. Turns pink when exposed to light.

Storage method

Keep away from light.

Synthesis method

1. Add salicylic acid and sodium bicarbonate alternately into distilled water, keep the temperature at 60°C, and keep it in an acidic state. At the same time, add an appropriate amount of ethylenediaminetetraacetic acid (EDTA) and insurance powder. Raise the temperature to 85°C and react for half an hour. The qualified reaction liquid is filtered and sent to the ebullating bed, and dried at 85°C to obtain salicylic acid.

2.Dissolve salicylic acid in distilled water at 50°C, and slowly neutralize it with dilute sodium hydroxide to pH while stirring. Value 5.4~5.8:

After the reaction, decolorize and filter. After the filtrate is clear, concentrate it under reduced pressure to a slurry, cool it, filter out the crystals, and dry it to get the finished product.

Purpose

1. Organic synthetic raw materials, preservatives, and reagents for measuring free acid in gastric juice. Antipyretics, analgesics and antirheumatic drugs. 2. Used as analytical reagent. Also used in organic synthesis, medicine, electronics, instrumentation, metallurgical industry, etc.