China Factory Direct
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| CAS number | 9045-28-7 |
| Product name | STARCH ACETATE |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical GradeIndustrial GradeSpecialty GradeMaterial GradeCosmetic 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) |
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 |
|---|---|---|
| Food Industry | Thickener, stabilizer, emulsifier | Starch is esterified with acetic acid under catalytic conditions to produce starch acetate, used to improve food texture and stability |
| Pharmaceutical Industry | Pharmaceutical excipient (e.g., tablet binder, sustained-release matrix) | Esterification degree is controlled to tailor solubility for oral dosage forms or controlled-release drug delivery systems |
| Textile Industry | Fabric finishing agent, sizing agent | An aqueous solution of starch acetate is applied to textile surfaces to enhance fiber strength and wrinkle resistance |
| Packaging Materials | Raw material for biodegradable packaging films | Leveraging its film-forming property, it is blended with other biopolymers and processed into eco-friendly packaging materials via extrusion or casting |
| Personal Care Industry | Thickener for personal care products (e.g., shampoos, body washes) | Starch acetate is dispersed in the aqueous phase under mild conditions to achieve stable thickening |
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Acetyl Content | Acid-Base Titration | Hydrolysis of ester groups followed by titration of liberated acetic acid with standardized NaOH. |
| Moisture Content | Karl Fischer Titration | Quantitative determination of water via iodine-sulfur dioxide reaction in pyridine-methanol medium. |
| Viscosity (4% w/w, 25C) | Capillary Viscometry | Measurement of flow time of solution through calibrated capillary tube under gravity to calculate kinematic viscosity. |
| pH (1% aqueous dispersion) | Potentiometric pH Measurement | Direct measurement using calibrated glass electrode in aqueous starch acetate dispersion. |
| Ash Content | Gravimetric Analysis (Ignition at 550C) | Incineration of sample to constant weight; residue mass expressed as percentage of original sample. |
| Heavy Metals (as Pb) | Atomic Absorption Spectroscopy (AAS) | Quantification of metal ions after acid digestion by measuring absorbance of ground-state atoms at characteristic wavelength. |
| Sulfated Ash | Gravimetric Analysis (H2SO4 treatment + ignition) | Sample treated with sulfuric acid then ignited; residue mass reflects inorganic impurities including sulfates. |
| Residual Solvents (e.g., acetone, methanol) | Gas Chromatography (GC-FID) | Separation and quantification of volatile solvents based on retention time and flame ionization detection response. |
| Particle Size Distribution | Laser Diffraction | Analysis of light scattering pattern from dispersed particles to determine size distribution by volume. |
| Clarity / Solution Appearance | Visual Inspection (against standard) | Assessment of clarity and presence of undissolved particles in specified aqueous dispersion under controlled lighting. |
| Substituted Degree (DS) | NMR Spectroscopy (1H or 13C) | Calculation of DS from integration ratio of acetyl methyl protons/carbons to anhydroglucose ring protons/carbons. |
| Microbial Limits | Membrane Filtration + Culture Enumeration | Quantification of aerobic mesophilic microorganisms by filtration, membrane transfer to agar media, and colony counting. |
| Test Item | Specification |
|---|---|
| Appearance | White to off-white powder |
| Purity | >=98.5% |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=1.0% |
| Heavy Metals | <=20 ppm |
| Residue on Ignition | <=0.5% |
| Acid Value (mg KOH/g) | <=2.0 mg KOH/g |
| Odor | Characteristic, faint starchy odor |
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| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
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.