Cresol Red Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 62625-29-0 |
| Product name | Cresol Red |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Industrial 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 Cresol Red
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk Cresol Red Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of Cresol Red
| Industry | Application | Process |
|---|---|---|
| Chemical Analysis & Testing | Acid-base indicator | Used in pH titrations, with a color transition range of pH 7.2 (yellow) to 8.8 (red); suitable for weak base–weak acid or strong base–strong acid titrations. |
| Biochemistry & Medicine | Cell culture component | Serves as a pH indicator in cell culture media; color changes monitor medium pH shifts, indicating cell growth status or contamination. |
| Analytical Chemistry | Complexometric titration indicator | Functions as a metal ion indicator in complexometric titrations for the determination of metal ions such as bismuth (Bi), with sharp endpoint color change. |
| Laboratory Research | Microscopy stain | Formulated into staining solutions for microscopic observation and staining analysis of biological tissues or cellular structures. |
| Industrial Manufacturing | Industrial product coloring agent | Applied as a coloring agent for ink, paint, or other chemical products. |
Manufacturing Quality Control of Cresol Red
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | UV-Vis Spectrophotometry | Quantifies methanol-soluble methylene blue form of cresol red at characteristic absorbance wavelength (578 nm) using Beer-Lambert law. |
| Appearance | Visual Inspection | Assessment of physical state and color against standard reference under controlled lighting and white background. |
| Solubility in Methanol | Qualitative Solubility Test | Observation of complete dissolution in specified volume of methanol at 20 C with no visible residue or turbidity. |
| Loss on Drying | Gravimetric Analysis | Measurement of mass loss after drying sample at 105 C to constant weight, indicating volatile impurities and moisture. |
| Residue on Ignition | Sulfated Ash Gravimetry | Determination of non-volatile inorganic residue after high-temperature ignition following sulfuric acid treatment. |
| Heavy Metals (as Pb) | Colorimetric Dithizone Method | Formation of colored metal-dithizone complex in chloroform layer; intensity compared to lead standard. |
| Chloride Impurity | Potentiometric Titration with AgNO3 | Titration with silver nitrate using silver electrode to detect endpoint via potential change from AgCl precipitation. |
| Sulfate Impurity | Turbidimetric Analysis | Reaction with barium chloride under acidic conditions to form BaSO4 suspension; quantified by light scattering. |
| pH of 0.04% Aqueous Solution | pH Potentiometry | Measurement using calibrated pH meter in aqueous solution prepared at specified concentration and temperature. |
| Melting Point | Capillary Melting Point Determination | Thermal analysis of crystalline transition observed visually or automatically in capillary tube under controlled heating rate. |
| Related Substances | HPLC-UV | Separation on reversed-phase column with UV detection; identification and quantification relative to reference standards. |
| Water Content | Karl Fischer Titration | Volumetric or coulometric titration based on iodine consumption in pyridine-methanol solvent system reacting with water. |
Technical Specifications of Cresol Red
| Test Item | Specification |
|---|---|
| Appearance | Red crystalline powder |
| Purity | >=98.5% |
| Melting Point | 172-176°C |
| Total Impurities | <=1.5% |
| Water Content (KF) | <=0.5% |
| Residue on Ignition | <=0.1% |
| Heavy Metals | <=10 ppm |
| Solubility | Soluble in ethanol, methanol, and dilute alkali; practically insoluble in water |
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 Cresol Red
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of Cresol Red
Packaging of Cresol Red
Industrial Cresol Red 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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