Phenol Red sodium salt Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 34487-61-1 |
| Product name | Phenol Red sodium salt |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical GradeReagent 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 Phenol Red sodium salt
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk Phenol Red sodium salt Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of Phenol Red sodium salt
| Industry | Application | Process |
|---|---|---|
| Biotechnology | pH indicator | Used in cell culture media to monitor pH changes; color transition range: pH 6.8 (yellow) to 8.4 (red) |
| Pharmaceutical R&D | In vitro diagnostic reagent | Employed as an acid-base indicator component in biochemical assays for enzyme activity measurement or metabolic studies |
| Chemical analysis | Laboratory reagent | Formulated into buffer solutions or indicator solutions for titration analysis or pH visualization monitoring |
Manufacturing Quality Control of Phenol Red sodium salt
| Test Item | Common Testing Method | Method Overview |
|---|---|---|
| Identification Test | Ultraviolet-Visible Spectrophotometry (UV-Vis) | Sodium phenol red exhibits characteristic absorption peaks at specific wavelengths (e.g., near 558 nm under alkaline conditions). Identification is performed by measuring its maximum absorption wavelength and absorbance. |
| Identification Test | Infrared Spectroscopy (IR) | Prepare a sample as a pressed pellet and measure the infrared spectrum. Compare it with standard spectra to confirm the presence of characteristic functional groups (e.g., sulfonic acid, phenolic hydroxyl groups). |
| Content Determination | Ultraviolet-Visible Spectrophotometry (UV-Vis) | Determine absorbance at the maximum absorption wavelength in an appropriate pH buffer (e.g., pH 7.4 or alkaline conditions). Calculate the content of sodium phenol red using a standard curve or comparative method with reference substances. |
| Content Determination | High-Performance Liquid Chromatography (HPLC) | Use a reversed-phase C18 column with a mobile phase consisting of a suitable proportion of methanol/acetronitrile-water or buffer solution. Detect using a UV detector (e.g., 430–560 nm) and determine the main component content using external standard or area normalization methods. |
| pH Value | pH Meter Method | Prepare a solution of sodium phenol red at a specified concentration (e.g., 0.1% w/v) and measure the pH using a calibrated pH meter. The pH should meet pharmacopoeia or standard requirements (usually weakly acidic to neutral). |
| Dry Loss | Thermogravimetric Analysis or Constant Weight Drying Method | Dry the sample at 105°C until constant weight is achieved and calculate the percentage of mass loss to control moisture and volatile impurities. |
| Residue on Ignition | Gravimetric Method | Weigh the residue after heating the sample to high temperatures (approximately 600–800°C) to evaluate the content of inorganic impurities. |
| Heavy Metals | Thioacetamide Method (Colorimetric) or Atomic Absorption Spectrometry (AAS) | Treat the sample according to pharmacopoeia procedures and determine the total amount of heavy metals such as lead and arsenic using colorimetric or AAS methods to ensure compliance with limit requirements. |
| Related Substances (Impurities) | High-Performance Liquid Chromatography (HPLC) | Use gradient or isocratic elution programs to separate and detect possible synthetic by-products or degraded impurities. Quantify using area normalization or correction factor-based main component self-reference methods. |
| Solution Clarity and Color | Visual Colorimetry or Spectrophotometry | Prepare a solution of specified concentration and compare it with standard turbidity or color solutions to check for clarity and whether the color conforms to specifications (sodium phenol red solution should be a specific red color). |
Technical Specifications of Phenol Red sodium salt
| Test Item | Specification |
|---|---|
| Appearance | Orange to amber to dark red powder or crystals |
| Purity | >=98.0% (HPLC) |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Residue on Ignition | <=0.1% |
| Heavy Metals | <=10 ppm |
| Melting Point | 276-279 °C |
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 Phenol Red sodium salt
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of Phenol Red sodium salt
Packaging of Phenol Red sodium salt
Industrial Phenol Red sodium salt 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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