Daily Chemical
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3,5-Dimethylbenzoic acid
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Product description
Parameters
3,5-Dimethylbenzoic acid, white flake powder. Slightly soluble in water, easily soluble in organic solvents such as benzene, toluene, ethanol, and ether. Used as an intermediate for the synthesis of ecdysone insecticides tebufenozide and methoxyfenozide; it can also increase the curing speed of polyurethane and shorten the demolding time; synthesize prostaglandins; synthesize flame retardants.
Basic Information
Chinese name: 3,5-dimethyl benzoic acid
English name: 3,5-Dimethylbenzoic acid
Alias: 4-benzoyl-o-phenylenediamine
More name: 4-Benzoyl-o-phenylenediamine C6H5COC6H3(NH2)2
CAS Number: 499-06-9
Molecular formula: C9H9O2
Molecular mass: 149.1671
Physical data
1. Properties: white flake powder
2. Density (g/ m3, 25/4℃): 1.211
3. Relative vapor density (g/cm3, air=1): not determined
4. Melting point (ºC): 168~171
5. Boiling point (ºC, normal pressure): 278
6. Standard heat of combustion (enthalpy) of crystalline phase (kJ·mol-1): -4504.29
7. The crystal phase standard claims heat (enthalpy) (kJ·mol-1): -466.43
8. Flash point (ºF): not determined
9. Specific rotation (º): not determined
10. Auto-ignition point or ignition temperature (ºC): not determined
11. Vapor pressure (kPa, 25ºC): 0.002
12. Saturated vapor pressure (kPa, 60ºC): not determined
13. Heat of combustion (KJ/mol): 54.6
14. Critical temperature (ºC): not determined
15. Critical pressure (KPa): not determined
16. The logarithm of the partition coefficient of oil and water (octanol/water): 2.82
17. Upper explosion limit (%, V/V): not determined
18. Lower explosion limit (%,V/V): not determined
19. Solubility: slightly soluble in water, easily soluble in organic solvents such as benzene, toluene, ethanol, and ether.
Storage method
Sealed and stored, placed in a ventilated, dry environment
resolve resolution
1. The preparation method is to add 1,3,5-trimethylbenzene and catalyst nickel salt into the oxidation reaction kettle, heat to a certain temperature, and pass air into the oxidation reaction vessel to produce the product.
2. Main purpose
It is an intermediate for the synthesis of ecdysone insecticides tebufenozide and methoxenozide. It can also increase the curing speed of polyurethane, shorten the demolding time, synthesize prostaglandins, and synthesize flame retardants.
Security Information
Risk term
R36/37/38: Irritating to eyes, respiratory system and skin. Irritating to eyes, respiratory system and skin.
Security term
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. After contact with eyes, please rinse immediately with plenty of water and seek medical advice.
S36: Wear suitable protective clothing. Wear suitable protective clothing.
System number
CAS Number: 499-06-9
MDL number: MFCD00002525
EINECS number: 207-876-5
RTECS number: DG8734030
BRN number: 1072182
PubChem number: 24864176
Toxicological data
Acute toxicity: mouse LD50 through abdominal cavity: 750mg/kg, behavior-rigidity (including stiffness), muscle contraction or spasm.
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M-methylbenzoic acid
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