Name | p-Toluic acid |
Synonyms | p-toluic p-Toluic acid p-toluylic acid crithminic acid 4-methylbenzoate p-carboxytoluene 4-Methylbenzoic acid p-methylbenzoic acid Toluenecarboxylic acid p-Tolylcarboxylic acid Para Toluic Acid (PTA) 4-Carboxytoluene, p-Toluic acid p-Toluic acid,4-Methylbenzoic acid |
CAS | 99-94-5 |
EINECS | 202-803-3 |
InChI | InChI=1/C8H8O2/c1-6-2-4-7(5-3-6)8(9)10/h2-5H,1H3,(H,9,10)/p-1 |
InChIKey | LPNBBFKOUUSUDB-UHFFFAOYSA-N |
Molecular Formula | C8H8O2 |
Molar Mass | 136.15 |
Density | 1,06 g/cm3 |
Melting Point | 177-180 °C (lit.) |
Boling Point | 274-275 °C (lit.) |
Flash Point | 181°C |
Solubility | 0.3g/l |
Vapor Presure | 0.02 hPa (70 °C) |
Appearance | White crystal |
Color | White to slightly yellow-cream |
Merck | 14,9535 |
BRN | 507600 |
pKa | 4.36(at 25℃) |
PH | 3.73(1 mM solution);3.2(10 mM solution);2.69(100 mM solution) |
Storage Condition | Store below +30°C. |
Stability | Stable. Incompatible with strong oxidizing agents, strong bases. |
Sensitive | Easily absorbing moisture |
Refractive Index | 1.5120 (estimate) |
MDL | MFCD00002565 |
Physical and Chemical Properties | Character white crystals. melting point 182 ℃ boiling point 275 ℃ solubility soluble in methanol, ethanol, ether, insoluble in hot water. |
Use | Mainly used in the manufacture of hemostatic aromatic acid, methyl nitrile, methyl benzoyl chloride, photosensitive materials |
Hazard Symbols | Xn - Harmful |
Risk Codes | 22 - Harmful if swallowed |
Safety Description | S22 - Do not breathe dust. S24/25 - Avoid contact with skin and eyes. |
WGK Germany | 1 |
RTECS | XU1575000 |
TSCA | Yes |
HS Code | 29163900 |
Toxicity | LD50 orally in Rabbit: 400 mg/kg |
white crystals. Melting point 182 °c. Boiling point 275 °c (sublimation). Soluble in methanol, ethanol, ether, difficult to dissolve in hot water, with the evaporation of water and volatile.
intermediates for pharmaceuticals, photosensitive materials, pesticides, pigments, etc.