Trimethylolpropane Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 77-99-6 |
| Product name | Trimethylolpropane |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical GradeIndustrial GradeMaterial GradeSpecialty 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 Trimethylolpropane
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk Trimethylolpropane Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of Trimethylolpropane
| Industry | Application | Process |
|---|---|---|
| Cosmetics | Used as a humectant and emulsifier | Mixed with oils and aqueous phases to form stable emulsion systems |
| Coatings | Used as a polyol feedstock for synthesizing polyurethane resins | Reacted with polyisocyanates to produce polyurethane materials |
| Plastics | Used in the production of polyester and epoxy resins | Reacted with polycarboxylic acids or epichlorohydrin to produce polymeric materials |
| Pharmaceuticals | Used as a pharmaceutical intermediate | Participates in the synthesis of certain organic compounds or serves as a solvent |
| Organic Synthesis | Used as an intermediate in the synthesis of various organic compounds | Undergoes esterification, etherification, and other reactions via its hydroxyl group |
| Textiles | Used as a fabric softener and antistatic agent | Binds to fiber surfaces to improve hand feel and antistatic performance |
Manufacturing Quality Control of Trimethylolpropane
| Milestone | Common Testing Methods | Method Overview |
|---|---|---|
| Appearance | Visual Inspection | Observe the sample's color, clarity, and presence of impurities under natural or standard light. Typically, it should be a colorless to slightly yellow transparent liquid or crystalline. |
| Purity | Gas Chromatography (GC) | Use a capillary column to separate TMP from other organic impurities by gas chromatography, and determine the main component content using area normalization or internal standard method. |
| Hydroxyl Value | Acid-Base Titration (Acetylation Method) | The sample reacts with acetic anhydride to form esters, which are then hydrolyzed. The resulting acetic acid is titrated with a standard potassium hydroxide solution to calculate the hydroxyl content (expressed as mg KOH/g). |
| Acid Value | Acid-Base Titration | Titrate the free acids in the sample with a standard potassium hydroxide ethanol solution, and express the result as mg KOH/g. |
| Moisture Content | Karl Fischer Method (Karl Fischer) | Determine the moisture content of the sample by reacting it quantitatively with Karl Fischer reagent using coulometric or volumetric methods. |
| Color | Platinum-Cobalt Colorimetry (APHA/Hazen Method) | Compare the sample with standard platinum-cobalt solutions to determine its color value (unit: Hazen or Pt-Co) to evaluate the product's color. |
| Ash Content | High-Temperature Incineration Method | Incinerate the sample in a high-temperature muffle furnace until constant weight, and calculate the ash content (%) based on the mass of the residual inorganic material. |
| Volatile Matter | Thermogravimetric Analysis (TGA) or Vacuum Distillation | Determine the content of volatile components by measuring weight loss upon heating or distillation under reduced pressure, to assess thermal stability or residual solvents. |
| Heavy Metal Content | Atomic Absorption Spectroscopy (AAS) or ICP-MS | After sample digestion, use atomic absorption spectroscopy or inductively coupled plasma mass spectrometry to determine the content of heavy metals such as lead, cadmium, and mercury. |
| Chloride Content | Silver Nitrate Titration or Ion Chromatography (IC) | Detect chloride ion content through precipitation titration or ion chromatography to assess chlorine impurities introduced by raw materials or processes. |
Technical Specifications of Trimethylolpropane
| Test Item | Specification |
|---|---|
| Appearance | Colorless crystalline solid |
| Purity | >=98.5% (GC) |
| Water Content (KF) | <=0.5% |
| Melting Point | 57.0–59.0°C |
| Total Impurities | <=1.5% |
| Single Impurity | <=0.5% |
| Residue on Ignition | <=0.1% |
| Acid Value (mg KOH/g) | <=1.0 |
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 Trimethylolpropane
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of Trimethylolpropane
Packaging of Trimethylolpropane
Industrial Trimethylolpropane 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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