4-Acetamidobenzoic acid
4-Acetamidobenzoic acid
CAS: 556-08-1
Molecular Formula: C9H9NO3
4-Acetamidobenzoic acid - Names and Identifiers
| Name | 4-Acetamidobenzoic acid |
| Synonyms | PAAB PAABA acedoben Acedoben Acetylated PABA 4-Carboxyacetanilide 4'-Carboxyacetanilide p-Acetamidobenzoic acid 4-(acetylamino)benzoate 4-Acetamidobenzoic acid P-Acetamido Benzoic acid p-Acetylamino benzoic acid 4-(acetylamino)-benzoicaci Benzoic acid, p-acetamido- Benzoic acid, 4-acetamido- 4-(acetylamino)benzoic acid Benzoic acid, 4-(acetylamino)- |
| CAS | 556-08-1 |
| EINECS | 209-114-7 |
| InChI | InChI=1/C9H9NO3/c1-6(11)10-8-4-2-7(3-5-8)9(12)13/h2-5H,1H3,(H,10,11)(H,12,13)/p-1 |
4-Acetamidobenzoic acid - Physico-chemical Properties
| Molecular Formula | C9H9NO3 |
| Molar Mass | 179.17 |
| Density | 1.2822 (rough estimate) |
| Melting Point | 259-262°C (dec.)(lit.) |
| Boling Point | 311.69°C (rough estimate) |
| Flash Point | 219.7°C |
| Water Solubility | <0.1 g/100 mL at 21 ºC |
| Solubility | DMSO (Slightly), Methanol (Slightly) |
| Vapor Presure | 1.66E-08mmHg at 25°C |
| Appearance | White crystal |
| Color | Off-white to slightly beige |
| BRN | 390602 |
| pKa | pK1: 4.28 (25°C) |
| Storage Condition | Sealed in dry,Room Temperature |
| Stability | Stable. Combustible. Incompatible with strong oxidizing agents. |
| Refractive Index | 1.5600 (estimate) |
| MDL | MFCD00002534 |
| Physical and Chemical Properties | White patchy crystals. Melting point 256.5 °c. Soluble in ethanol, insoluble in water and ether. |
4-Acetamidobenzoic acid - Risk and Safety
| Risk Codes | 36/37/38 - Irritating to eyes, respiratory system and skin. |
| Safety Description | 24/25 - Avoid contact with skin and eyes. |
| WGK Germany | 3 |
| TSCA | Yes |
| HS Code | 29242995 |
4-Acetamidobenzoic acid - Reference Information
| NIST chemical information | information provided by: webbook.nist.gov (external link) |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| Use | for organic synthesis. is an acetylated derivative of P-aminobenzoic acid and a metabolite of the anesthetic benzocaine. |
| production method | Method 1: p-aminobenzoic acid is used as a starting material and is obtained by acetylation. P-aminobenzoic acid was dissolved in ethyl acetate, acetic anhydride was added with stirring and the temperature was raised to 70 °c. Then it was cooled, filtered, washed twice with water, and then crystallized with ethanol to obtain a finished product. Method 2: with P-toluidine as raw material, it was obtained by acetylation and oxidation. Acetylated with acetic anhydride as raw material, oxidation with potassium permanganate, oxidation temperature of 60-70 deg C. |
Last Update：2024-04-09 02:00:09
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View History
4-Acetamidobenzoic acid
(N-TETRADECYL)TRIMETHYLAMMONIUM BROMIDE
Bis[dimethyl[[2-(3-hexadecenylcarbonyloxy)ethyl]thio]stannyl] sulfide
SMS 201-995
SULFOISOPHTHALIC(5-) ACID, MONOLITHIUM SALT
2-[(4-甲基苯基)氨基]乙酸乙酯
(3R)-3-[[(1,1-二甲基乙基)二甲基硅烷基]氧基]-5-氧代-1-环戊烯-1-庚酸甲酯
BENZOIC ACID, 4-[[[(3-CHLORO-4-ETHOXYBENZOYL)AMINO]THIOXOMETHYL]AMINO]-
L-6-OXO-PIPECOLINIC ACID
(N-TETRADECYL)TRIMETHYLAMMONIUM BROMIDE
Bis[dimethyl[[2-(3-hexadecenylcarbonyloxy)ethyl]thio]stannyl] sulfide
SMS 201-995
SULFOISOPHTHALIC(5-) ACID, MONOLITHIUM SALT
2-[(4-甲基苯基)氨基]乙酸乙酯
(3R)-3-[[(1,1-二甲基乙基)二甲基硅烷基]氧基]-5-氧代-1-环戊烯-1-庚酸甲酯
BENZOIC ACID, 4-[[[(3-CHLORO-4-ETHOXYBENZOYL)AMINO]THIOXOMETHYL]AMINO]-
L-6-OXO-PIPECOLINIC ACID