Name | 2,4-Dichlorobenzoic acid |
Synonyms | 2,4-DCBA 2,4-Dichlorobenzoic 2,4-dichlorobenzoate Furosemide EP Impurity E 2,4-Dichlorobenzoic acid 2,4-Dichlolrobenzoic Acid 2,4-Dichlorobenzyl alcohol EP Impurity E TETRASUL PESTANAL (2,4,4',5-TETRA- CHLOR Furosemide Impurity 5(Furosemide EP Impurity E) |
CAS | 50-84-0 |
EINECS | 200-067-8 |
InChI | InChI=1/C7H4Cl2O2/c8-4-1-2-5(7(10)11)6(9)3-4/h1-3H,(H,10,11)/p-1 |
Molecular Formula | C7H4Cl2O2 |
Molar Mass | 191.01 |
Density | 1.4410 (rough estimate) |
Melting Point | 157-160 °C (lit.) |
Boling Point | 200 °C |
Flash Point | 141°C |
Water Solubility | 0.36 g/L (15 ºC) |
Solubility | Soluble in ethanol (100 mg/ml), water (0.48 mg/ml), alcohol, ether, and acetone. |
Vapor Presure | 0.000275mmHg at 25°C |
Appearance | White to light yellow powder |
Color | White to almost white |
BRN | 1868192 |
PH | 2.8 (0.36g/l, H2O, 15℃) |
Storage Condition | Sealed in dry,Room Temperature |
Stability | Stable. Incompatible with strong oxidizing agents. |
Refractive Index | 1.4590 (estimate) |
MDL | MFCD00002414 |
Physical and Chemical Properties | White to light yellow needle-like crystal or powder. melting point 160 ℃ solubility: soluble in ethanol, ether, benzene, acetone, chloroform, 5% caustic soda solution, insoluble in water and heptane. |
Use | Used as pharmaceutical, dye, pesticide intermediates |
Risk Codes | R22 - Harmful if swallowed R36/37/38 - Irritating to eyes, respiratory system and skin. |
Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36 - Wear suitable protective clothing. S37/39 - Wear suitable gloves and eye/face protection S22 - Do not breathe dust. |
WGK Germany | 3 |
RTECS | DG6650000 |
TSCA | Yes |
HS Code | 29163900 |
Hazard Note | Irritant |
white to light yellow needle-like crystals or powder. Soluble in ethanol, ether, benzene, acetone, chloroform, 5% caustic soda solution, insoluble in water and heptane. Melting point 160 ℃, easy sublimation, no boiling point.
2, 4-aminotoluene is replaced by 2, 4-chlorotoluene in the presence of sulfuric acid and sodium nitrite by diazotization reaction and cuprous chloride, the latter is oxidized with potassium permanganate to obtain 2,4-= chlorobenzoic acid potassium salt, and then acidified with hydrochloric acid to obtain 2,4-chlorobenzoic acid. The reaction product is crystallized, washed and dried to obtain a finished product.
This product can be used as an intermediate of dye, bactericide, drug (antimalarial drug, non-mercury mud drug, etc.).