Palmitic anhydride Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 623-65-4 |
| Product name | Palmitic anhydride |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical GradeIndustrial GradeMaterial GradeFood 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 Palmitic anhydride
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk Palmitic anhydride Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of Palmitic anhydride
| Industry | Application | Process |
|---|---|---|
| Cosmetics | Acts as an emulsifier, emollient, and thickener to enhance product stability and skin feel | Functions synergistically with surfactants in emulsion systems; incorporated via high-temperature melt blending followed by cooling and homogenization |
| Pharmaceuticals | Serves as a pharmaceutical intermediate for synthesizing palmitate-based prodrugs (e.g., the antiviral agent tenofovir disoproxil) | Undergoes acylation with active pharmaceutical ingredients under anhydrous conditions; common catalysts include DMAP or triethylamine |
| Food | Used as a food additive (E1402) to improve anti-retrogradation properties and texture of starch-based foods | Undergoes esterification modification with starch at elevated temperatures to enhance thermal stability and pasting performance |
| Plastics | Acts as a co-stabilizer in polyvinyl chloride (PVC) heat stabilization systems to minimize degradation-induced discoloration | Blended with other metallic soap stabilizers (e.g., calcium stearate) and provides synergistic stabilization during extrusion processing |
| Coatings | Used as a modifier for alkyd resins to improve film flexibility and water resistance | Added during the late stage of resin synthesis to undergo transesterification with polyols or polycarboxylic acids |
Manufacturing Quality Control of Palmitic anhydride
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Palmityl Chloride Equivalent) | Acid-Base Titration | Hydrolysis of anhydride to palmitic acid followed by titration with standardized NaOH solution using phenolphthalein indicator. |
| Acid Value | Acid-Base Titration | Titration of free fatty acids in sample with KOH in ethanol, using phenolphthalein; expressed as mg KOH per g sample. |
| Moisture Content | Karl Fischer Titration | Electrochemical titration using iodine generated in situ to react stoichiometrically with water in the sample. |
| Color (APHA) | Visual Comparison or Spectrophotometry | Comparison of sample color against APHA platinum-cobalt standard solutions or measurement of absorbance at 455 nm. |
| Melting Point | Capillary Melting Point Determination | Heating of sample in capillary tube and observing temperature range at which solid transitions to liquid. |
| Residue on Ignition | Gravimetric Analysis | Heating sample to 700-800 C to burn off organic matter, then weighing inorganic residue. |
| Heavy Metals (as Pb) | Atomic Absorption Spectroscopy (AAS) | Quantification of total heavy metals after wet digestion, using lead-specific hollow cathode lamp. |
| Chloride Content | Potentiometric Titration | Titration with AgNO3 using silver electrode to detect endpoint based on potential change. |
| Iodine Value | Wijs Method | Addition of excess Wijs reagent (ICl in glacial acetic acid), reaction with double bonds, followed by back-titration of unreacted ICl with Na2S2O3. |
| Peroxide Value | Iodometric Titration | Reaction of peroxides with KI under acidic conditions to liberate I2, followed by titration with Na2S2O3. |
| Organic Volatile Impurities | Gas Chromatography (GC-FID) | Separation and quantification of volatile impurities (e.g., solvents, monoacylglycerols) using flame ionization detection. |
| Specific Gravity | Digital Density Meter | Measurement of density relative to water at 25 C using oscillating U-tube principle. |
Technical Specifications of Palmitic anhydride
| Test Item | Specification |
|---|---|
| Appearance | White to off-white crystalline solid |
| Purity | >=98.5% (by NMR) |
| Melting Point | 51.0–54.0 °C |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=1.5% |
| Single Impurity | <=0.5% |
| Acid Value (mg KOH/g) | <=2.0 mg KOH/g |
| Odor | Characteristic fatty odor |
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 Palmitic anhydride
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NMR Spectra of Palmitic anhydride
Packaging of Palmitic anhydride
Industrial Palmitic anhydride 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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