Thymolphthalein Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 125-20-2 |
| Product name | Thymolphthalein |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical GradeReagent Grade |
| Packaging | 25L/drum200L/drum1000L/IBC |
| 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 Thymolphthalein
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk Thymolphthalein Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of Thymolphthalein
| Industry | Application | Process |
|---|---|---|
| Chemical Analysis | pH Indicator | Used in acid-base titrations; color change range: pH 9.3 (colorless) to 10.5 (blue) |
| Educational Laboratories | Teaching Reagent | Applied as an acid-base indicator in chemistry teaching experiments to demonstrate pH changes |
| Environmental Monitoring | Water Quality Testing | Used to detect alkaline substances in water samples, supporting assessment of sample acidity or alkalinity |
| Pharmaceutical Research | Analytical Intermediate or Reference Standard | Used as a certified reference material or analytical standard in pharmaceutical R&D laboratories |
Manufacturing Quality Control of Thymolphthalein
| Test Item | Common Testing Methods | Method Overview |
|---|---|---|
| Appearance | Visual Inspection | Observe the color and physical state of the sample under natural light or standard illumination. Thymolphthalein should appear as colorless or white to slightly yellow crystalline powder. |
| Melting Point | Capillary Melting Point Determination | Determine the melting temperature using a melting point apparatus; the melting point of thymolphthalein is typically between 245–250 °C, used to assess purity. |
| Identification | Ultraviolet-Visible Spectrophotometry (UV-Vis) | In alkaline conditions (e.g., NaOH solution), thymolphthalein turns blue and exhibits a characteristic absorption peak at 590–610 nm for qualitative confirmation. |
| Assay | Ultraviolet-Visible Spectrophotometry (UV-Vis) | Measure absorbance at a specific wavelength (e.g., approximately 598 nm) and quantitatively calculate the content of thymolphthalein based on a standard calibration curve. |
| Loss on Drying | Thermogravimetric Analysis (TGA) or Oven Drying Method | Dry the sample at 105 °C until constant weight is achieved; calculate the content of moisture and volatile components based on mass loss. |
| Residue on Ignition | Gravimetric Method | Measure the mass of inorganic residues remaining after high-temperature incineration of the sample, reflecting inorganic impurity levels; typically required to be ≤0.1%. |
| Related Substances (Impurities) | High-Performance Liquid Chromatography (HPLC) | Separate the main component from impurities using reversed-phase HPLC; evaluate impurity levels by comparison with reference standards or self-reference methods to control purity. |
| Solubility | Solubility Test | Observe solubility in solvents such as water, ethanol, and chloroform. Thymolphthalein is poorly soluble in water but readily soluble in ethanol and alkaline solutions. |
Technical Specifications of Thymolphthalein
| Test Item | Specification |
|---|---|
| Appearance | White to pale yellow crystalline powder |
| Purity | >=98.5% |
| Melting Point | 248.0 - 252.0 °C |
| Total Impurities | <=1.5% |
| Single Impurity | <=0.5% |
| Water Content (KF) | <=0.5% |
| Residue on Ignition | <=0.1% |
| Heavy Metals | <=20 ppm |
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 Thymolphthalein
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NMR Spectra of Thymolphthalein
Packaging of Thymolphthalein
Industrial Thymolphthalein 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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