Benzocaine
- Createtime： 2026-04-14
- Updatetime： 2026-07-24
Product Details
| useage |
Industrial use
|
| deliveryInfo |
|
| appearance |
crystal
|
| Molecular Weight |
165.19
|
| aliasen |
|
| supplyCapacity |
50000MT/Month
|
| harbor |
Qingdao,China
|
| minorder |
1KG
|
| Appearance |
Uniform white crystal
|
Shandong Huashang Chemical Co., Ltd. is a high-tech enterprise focused on industry of fine chemicals research and develop, produce and sale. Shandong Huashang Chemical Co., Ltd. is located in Shan Dong Ji Nan China. we have the ability to provide you high quality products. More than 90 % of our products are exported to developed countries and regions such as north America, Europe, Japan, South Korea and the Middle East.
Benzocaine
1. Basic Information
Name: Benzocaine
Alias: Ethyl 4-aminobenzoate, Anesthesin
CAS No.: 94-09-7
Molecular Formula: C9H11NO2
Molecular Weight: 165.19
Category: Local anesthetic API, pharmaceutical intermediate, cosmetic raw material
2. Physical and Chemical Properties
Physical Properties
- Appearance: White crystalline powder
- Odor: Odorless, slightly bitter taste
- Solubility: Slightly soluble in water; freely soluble in ethanol, chloroform, ether; soluble in dilute acids
- Melting Point: 88–90 ℃
- Boiling Point: 172 ℃ (14 mmHg)
- Density (predicted): 1.17 g/cm3
- Hygroscopy: Non-hygroscopic under normal humidity
- Aqueous property: Weakly alkaline suspension in water, soluble in acidic aqueous solution to form salts
Chemical Properties
- Molecular structure: Para-substituted aminobenzoic acid ethyl ester, contains primary amino group and ester group
- Ester hydrolysis: Ester bond hydrolyzes under strong acid/alkali heating to generate 4-aminobenzoic acid and ethanol
- Aromatic amine characteristic: Amino group can undergo diazotization, acylation reactions for derivative synthesis
- Thermal stability: Stable below 80 ℃; decomposes at high temperature to release ethyl alcohol and aminobenzoic acid fragments
- Photostability: Slightly light-sensitive, long-term UV exposure turns faint yellow
- Compatibility: Compatible with neutral polar solvents, weak acid medium; incompatible with strong oxidants, concentrated strong alkali
3. Main Application Fields
1. Local Anesthetic API (Core Application)
Raw material for topical pain-relief ointment, oral ulcer gel, ear drops, sore throat spray; relieve surface skin and mucosal pain
2. Pharmaceutical Intermediate
Synthesize procaine, tetracaine and other amide ester anesthetic drugs
3. Cosmetic Auxiliary
Low-concentration additive in sunscreens, hair care products, local numbing skincare formulations
4. Biochemical Research Reagent
Standard sample for local anesthetic detection, pharmacology experiment substrate
4. Quality Specification Table
| Test Item | Standard Specification |
| CAS Number | 94-09-7 |
| Molecular Formula | C9H11NO2 |
| Appearance | Uniform white crystal without discoloration impurities |
| HPLC Purity | Pharma Grade ≥99.0% |
| Melting Point | 88–90 ℃ |
| Water Content (KF) | ≤0.30% |
| Residue on Ignition | ≤0.10% |
| Single Maximum Unknown Impurity | ≤0.05% |
| Heavy Metals (Pb) | ≤10 ppm |
| Packaging | 1kg/5kg aluminum foil vacuum bag, 25kg PE lined fiber drum |
| Storage Condition | Hermetically sealed cool dry warehouse below 25 ℃, full light shielding, isolate alkaline and oxidizing substances |
| Transportation Requirement | Light-sensitive pharmaceutical solid powder, moisture-proof sealed packaging |
| Shelf Life | 36 months under nitrogen vacuum sealed storage |
