China Factory Direct
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| CAS number | 1120-25-8 |
| Product name | PALMITOLEIC ACID METHYL ESTER |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical GradeMaterial GradeSpecialty GradeIndustrial GradeFood 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) |
Based on current marketvolatility and material availability.
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
| Industry | Application | Process |
|---|---|---|
| Cosmetics | Emollient, skin-conditioning agent | Used as a lubricating ingredient in personal care products such as creams, lotions, and hand creams to enhance skin feel and moisturization |
| Biofuels | Biodiesel component | Produced via transesterification for use as a renewable energy source to replace conventional diesel |
| Chemicals | Intermediate | Applied in the synthesis of other fatty acid derivatives, including alcohols, amines, and polymer precursors |
| Food | Indirect food additive | Employed as a processing aid—specifically as a lubricant in food-contact materials or packaging (not intended for direct consumption) |
| Pharmaceuticals | Pharmaceutical excipient | Used as a solvent or plasticizer in soft capsules and topical ointments to improve drug release performance |
| Test Item | Common Testing Method | Method Overview |
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| Purity/Content | Gas Chromatography (GC) | Capillary column gas chromatography with FID detector is used to quantitatively analyze the peak area of methyl palmitoleate. The purity or mass fraction is calculated using internal or external standard methods. This method offers excellent separation, high sensitivity, and is the standard method for content determination of fatty acid methyl esters. |
| Acid Value | Titration Method (GB/T 5530 or ISO 660) | The sample is dissolved in a neutral ethanol-ether mixed solvent and titrated with standard potassium hydroxide solution using phenolphthalein as indicator to determine free fatty acids. The acid value is expressed as mg KOH/g, reflecting the degree of hydrolysis. |
| Iodine Value | Wijs Method (GB/T 5532 or ISO 3961) | Based on the addition reaction between iodine and unsaturated double bonds, excess Wijs reagent is added, and the remaining iodine is titrated with sodium thiosulfate. The iodine value (g I₂/100g sample) indicates the degree of unsaturation. Methyl palmitoleate contains one double bond, with a theoretical iodine value of approximately 80–90. |
| Peroxide Value | Iodometric Method (GB/T 5538 or ISO 3960) | Under acidic conditions, peroxides oxidize potassium iodide to release iodine, which is then titrated with standard sodium thiosulfate solution. Results are expressed in millimoles of peroxide per kilogram of oil (mmol/kg), used to assess the initial stage of oxidation. |
| Moisture Content | Karl Fischer Method (KF, GB/T 5537 or ISO 764) | Based on the quantitative reaction between water and Karl Fischer reagent, moisture content is determined by volumetric or coulometric titration. Typically requires moisture < 0.1%. High moisture levels may affect product stability and downstream applications. |
| Color | Lovibond Colorimetric Method (GB/T 605 or ISO 15304) | The Lovibond tintometer compares sample color using red, yellow, and blue filters, reporting results as Y (yellow) and R (red) values. Methyl palmitoleate is typically pale yellow to colorless; abnormal color may indicate oxidation or impurities. |
| Saponification Value | Titration Method (GB/T 5534 or ISO 3657) | The sample is saponified by refluxing with excess ethanolic potassium hydroxide solution, followed by back-titration of residual alkali with standard hydrochloric acid. The saponification value (mg KOH/g) verifies completeness of esterification and molecular weight consistency. |
| Heavy Metals (e.g., Pb, As, Hg) | Atomic Absorption Spectroscopy (AAS) or Inductively Coupled Plasma Mass Spectrometry (ICP-MS) | After sample digestion, specific heavy metal elements are measured by AAS or ICP-MS to ensure compliance with safety or industrial limits (e.g., Pb ≤ 0.1 mg/kg). |
| Test Item | Specification |
|---|---|
| Appearance | Colorless liquid |
| Purity | >=98.0% (GC) |
| Water Content (KF) | <=0.5% |
| Acid Value (mg KOH/g) | <=0.5 |
| Refractive Index (n20/D) | 1.440–1.445 |
| Relative Density (20°C/25°C) | 0.855–0.865 g/cm³ |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
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| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
| Pictograms | ![]() |
| Signal Word | Warning |
| Safety Data Sheet | |
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.