o-Cresolsulfonic acid Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 7134-04-5 |
| Product name | o-Cresolsulfonic acid |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical GradeIndustrial GradeSpecialty GradeMaterial 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) |
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Documents We Provide for o-Cresolsulfonic acid
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk o-Cresolsulfonic acid Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of o-Cresolsulfonic acid
| Industry | Application | Process |
|---|---|---|
| Pesticides | Intermediate for synthesizing organophosphorus insecticides (e.g., pirimiphos-methyl, pyridaphenthion) | Condensation reaction with phosphorochloridates |
| Dyes | Diazotization component or coupling component for synthesizing acid dyes, reactive dyes, and azo dyes | Diazotization-coupling reaction; sulfonation-condensation reaction |
| Pharmaceuticals | Intermediate for antifungal agents (e.g., clotrimazole derivatives) and antipyretic-analgesic compounds | Multistep organic synthesis including cyclization, substitution, and acylation |
| Surfactants | Sulfonated modification product used in preparing alkylphenol ethoxylate nonionic surfactants | Sulfonation followed by ethoxylation |
| Rubber Chemicals | Sulfonated precursor for rubber antioxidants (e.g., RD derivatives) and accelerators | Condensation with formaldehyde, aniline, etc., followed by sulfonation |
Manufacturing Quality Control of o-Cresolsulfonic acid
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | Acid-Base Titration with NaOH | Quantifies active acid content by neutralization with standardized sodium hydroxide solution using phenolphthalein indicator. |
| Color | APHA Color Scale (Visual or Spectrophotometric) | Compares sample color to platinum-cobalt standard solutions or measures absorbance at 455 nm against distilled water. |
| Water Content | Karl Fischer Coulometric Titration | Electrochemically determines trace water via iodine generation and stoichiometric reaction with water in anhydrous methanol medium. |
| Residue on Ignition | Gravimetric Analysis | Measures non-volatile inorganic impurities remaining after high-temperature ashing and cooling to constant weight. |
| Heavy Metals (as Pb) | Atomic Absorption Spectroscopy (AAS) | Quantifies total heavy metals after wet digestion by measuring absorbance of ground-state atoms in flame or graphite furnace. |
| Sulfated Ash | Gravimetric Analysis | Determines inorganic sulfate residue after combustion in presence of sulfuric acid followed by ignition and weighing. |
| Chloride Impurity | Ion Chromatography (IC) | Separates and quantifies chloride ions using anion-exchange column and conductivity detection. |
| Related Substances | High-Performance Liquid Chromatography (HPLC) | Separates and quantifies structural analogs and degradation products using reversed-phase C18 column and UV detection at 254 nm. |
| Density | Digital Density Meter (Oscillating U-tube) | Measures mass per unit volume based on resonant frequency shift of a vibrating U-shaped tube filled with sample. |
| Refractive Index | Refractometry | Determines ratio of light velocity in air vs. sample by measuring angle of refraction at specified temperature (e.g., 20 C). |
| Acid Value | Potentiometric Titration with KOH | Determines milligrams of KOH required to neutralize acidic groups in 1 g sample, using pH electrode for endpoint detection. |
| Non-Volatile Residue | Evaporation Gravimetry | Quantifies residue left after controlled evaporation of fixed sample volume under nitrogen stream at 105 C. |
Technical Specifications of o-Cresolsulfonic acid
| Test Item | Specification |
|---|---|
| Appearance | Colorless to pale yellow liquid |
| Purity | >=98.5% |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=1.5% |
| Single Impurity | <=0.3% |
| Acid Value (mg KOH/g) | 195-215 mg KOH/g |
| Refractive Index (n20/D) | 1.545-1.555 |
| Relative Density (20°C/25°C) | 1.220-1.240 g/cm³ |
Specifications vary by industry. Reach out to our technical experts for a COA tailored specifically to your application. Email:selse@GRchemical.com
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Download COA of o-Cresolsulfonic acid
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
Packaging of o-Cresolsulfonic acid
Industrial o-Cresolsulfonic acid Procurement FAQ
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.
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