China Factory Direct
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| CAS number | 150-13-0 |
| Product name | 4-Aminobenzoic acid |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Agricultural GradePharmaceutical GradeIndustrial GradeSpecialty GradeCosmetic GradeFood Grade |
| Packaging | 25KG/bag500KG/bag1000KG/bag |
| Sample | Test Samples Available (Click to Request Samples) |
| COA | View COA |
| Price | Get Quote |
| Supply Type | Bulk / Contract manufacturing / OEM |
| Shipping | FCL / LCL available |
| Payment Terms | Support FOB \ CIF \ EXW quotations, and accept Letter of Credit (L/C). |
| Manufacturer | Greenrock Chemical(China Factory) |
Based on current marketvolatility and material availability.
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
| Industry | Application | Process |
|---|---|---|
| Pharmaceuticals | Key intermediate for the synthesis of folic acid (vitamin B9) | Condensation and cyclization with 2,4,5-triamino-6-hydroxypyrimidine sulfate and α-chloropropionaldehyde |
| Pharmaceuticals | Raw material for the local anesthetic benzocaine (ethyl 4-aminobenzoate) | Esterification with ethanol under acidic conditions |
| Cosmetics | Synthetic precursor for ultraviolet (UV) absorbers (e.g., PABA-based sunscreen agents) | Esterification with alcohols (e.g., octanol, cetyl alcohol) to produce 4-aminobenzoate esters |
| Dyes | Intermediate for azo dyes and reactive dyes | Diazotization followed by coupling with phenols or aromatic amines to form azo colorants |
| Pesticides | Synthetic intermediate for certain herbicides and plant growth regulators | Incorporated into heterocyclic ring systems or used as a substituted benzene structural unit |
| Detection Item | Common Testing Methods | Method Overview |
|---|---|---|
| Identification Test | Infrared Spectroscopy (IR) | Measures the infrared absorption spectrum of para-aminobenzoic acid and compares it with a standard spectrum to confirm the presence of characteristic functional group peaks (e.g., N–H, C=O, benzene ring). |
| Chemical Color Reaction | Utilizes the aromatic primary amine structure of para-aminobenzoic acid; under acidic conditions, it undergoes diazotization with sodium nitrite, followed by coupling with β-naphthol to produce a red azo dye, used for qualitative identification. | |
| Content Determination | High-Performance Liquid Chromatography (HPLC) | Uses a reversed-phase C18 column with phosphate buffer-methanol or acetonitrile as mobile phase, detected by UV detector (typically at 240–290 nm). Quantitative analysis is performed using external standard or internal standard methods. |
| Acid-Base Titration | Leverages the amphoteric nature of para-aminobenzoic acid; titration is carried out in non-aqueous solvent (e.g., glacial acetic acid) using perchloric acid as titrant and crystal violet as indicator, enabling non-aqueous titration for content determination. | |
| Related Substances (Impurity Testing) | High-Performance Liquid Chromatography (HPLC) | Employs gradient or isocratic elution to separate and detect potential impurities (e.g., intermediates, degradation products). Limits are assessed using area normalization or the main component self-control method with correction factors. |
| Drying Loss | Thermogravimetric Analysis (TGA) or Constant-Pressure Drying Method | Dries the sample at a specified temperature (e.g., 105°C) until constant weight, calculating the percentage of mass loss to assess moisture and volatile substance content. |
| Residue on Ignition | Gravimetric Method | Heats the sample to high temperature (typically 700–800°C), then weighs the residual inorganic matter to control total inorganic impurities. |
| Heavy Metals | Thioacetamide Method (Colorimetry) | Under weakly acidic conditions, heavy metal ions in the sample react with thioacetamide to form colored sulfide precipitates, which are compared with a standard lead solution to ensure heavy metal limits are within acceptable ranges. |
| pH Value | pH Meter Measurement | Prepares an aqueous solution at a specified concentration (e.g., 1%), then directly measures pH using a calibrated pH meter to ensure compliance with pharmacopoeial or quality standards. |
| Test Item | Specification |
|---|---|
| Appearance | White to light yellow crystalline powder |
| Purity | ≥99.0% |
| Loss on drying | ≤0.2% |
| Residue on ignition | ≤0.1% |
| Nitrobenzoic acid | ≤0.2% |
| Single purity | ≤0.1% |
| Total purity | ≤0.5% |
| Aniline | ≤10 ppm |
| P-toluidine | ≤10 ppm |
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| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
1. How do you ensure product quality consistency?
We rely on a mature China-based manufacturing system and implement strict batch control and quality inspection for every shipment. Our production process complies with ISO 9001 standards, and a COA is provided for each batch to ensure consistent and reliable quality.
2. Do you offer competitive pricing for bulk orders?
Yes, as a China-based manufacturer and bulk supplier, we provide tiered pricing based on order volume. We support FOB and CIF quotations, as well as L/C payment terms for large transactions to meet international trade requirements.
3. Can you support large-volume or long-term supply?
We have stable production capacity and a well-established supply chain, enabling continuous bulk supply. We support ton-level and container-level orders, as well as long-term cooperation projects.
4. What is your typical lead time?
For in-stock products, shipment can be arranged within 1–3 days. For bulk packaging or customized orders, lead time depends on the specific quantity and production schedule.
5. What documents do you provide?
We can provide complete documentation upon request, including COA, SDS, TDS, and other compliance certificates, meeting industrial procurement and export requirements.
6. Can you customize product specifications or packaging?
Yes, we support customization of parameters such as purity, impurities, residual solvents, and heavy metals. We also offer various bulk packaging options, including 25kg bags, drums, and IBC tanks, suitable for industrial applications and transportation.
7. What shipping options do you support?
We support both FCL (Full Container Load) and LCL (Less than Container Load) shipments, and can flexibly arrange logistics solutions based on order size to meet bulk chemical export needs.
8. Do you provide technical or application support?
Yes, we provide basic application guidance and technical support based on industry experience to help customers optimize product usage.
9. How do you handle compliance and export regulations?
We are familiar with international trade and export regulations, ensuring all products comply with relevant requirements. We also provide complete documentation to support smooth customs clearance and global delivery.