M Series refined cotton is produced from Xinjiang cotton linters through alkaline cooking and multi-stage bleaching. The M5–M1000 range gives etherification and esterification producers a single, batch-consistent source for low-, medium- and high-viscosity feedstock — with a certificate of analysis on every batch.
M Series is our core refined cotton line, made from Xinjiang cotton linters — the short, high-cellulose fibers recovered after ginning. The linters go through alkaline cooking, multi-stage washing and bleaching, and controlled purification to produce a bright, uniform cellulose pulp. From grade M5 to grade M1000 the series covers the full viscosity spectrum, so derivative producers can source low-, medium- and high-viscosity feedstock from one consistent supplier instead of juggling multiple mills. Viscosity and purity are tracked in-process every shift, and every batch ships with its own certificate of analysis.
Every cell below is confirmed grade by grade on the current technical data sheet — ask for the latest TDS with your inquiry.
| Parameter | Typical Value | Test Method |
|---|---|---|
| α-Cellulose | Ask for latest spec | Per GB/T — |
| Viscosity range | Ask for latest spec | Per GB/T — |
| Ash | Ask for latest spec | Per GB/T — |
| Iron | Ask for latest spec | Per GB/T — |
| Whiteness | Ask for latest spec | Per GB/T — |
| Moisture | Ask for latest spec | Per GB/T — |
| Degree of polymerization (DP) | Ask for latest spec | Per GB/T — |
Values marked "Ask for latest spec" are confirmed grade by grade on the current TDS — send us your target grade and the latest sheet comes back with your quote. Test methods are executed per GB/T, GOST and ASTM frameworks; full standard numbers are printed on the TDS for each grade.
Grades are organized into low, medium and high viscosity tiers. Exact grade names and viscosity windows are confirmed on the TDS — tell us your process and we will point you to the right tier.
Short-chain grades at the low end of the range, selected where fast reaction kinetics and quick dissolution matter. The typical fit is high-solids etherification and fast-dissolving, instantized derivative systems.
Request TDS for this range →The general-purpose workhorse tier for mainstream cellulose ether production — predictable reaction behavior and stable finished-product viscosity, run after run. The default starting point for standard HPMC and HEMC lines.
Request TDS for this range →Long-chain grades for high-viscosity ethers and water-retention systems, where finished-solution viscosity and moisture retention are the performance targets that decide grade selection.
Request TDS for this range →Recommended tiers below are starting points — final grade selection depends on your target solution viscosity and process.
Construction-grade ethers for tile adhesives, renders and paints, where water retention and thickening set finished-product performance.
Carboxymethyl cellulose lines running high-solids etherification favor lower-viscosity, fast-reacting feedstock with uniform purity.
Microcrystalline cellulose for tableting and food applications calls for high-purity feedstock with a controlled degree of polymerization.
Nitrocellulose, cellulose acetate and custom derivative routes — share your process and target specification for a matched grade.
Technical documents in PDF for your records and vendor files. Current versions are reissued whenever specifications are updated.
Full grade list, typical properties and test methods, including grade-by-grade viscosity windows.
Request by inquirySafety, handling and transport information for refined cotton bales.
Publicly available per regulatory requirements.
Request by inquiryAn example certificate of analysis showing exactly which parameters are reported and signed off for every shipped batch.
Request by inquiryThe same checkpoint system runs across every product line — incoming, in-process and outgoing control, with documentation to back it up.
* Certification claims are subject to document verification; certificates are available for review during factory audit or on request under NDA.
Same quality system and export documentation, different grade profiles — many customers run two series in parallel for different derivative lines.
High-alpha-cellulose pulp with low impurities and consistent nitration performance for reliable nitrocellulose production.
View Series →
Cotton-linter based grades engineered for high-purity downstream uses where feedstock quality is decisive.
View Series →
Sheet-form cotton pulp for processes requiring board-format feedstock and controlled degree of polymerization.
View Series →Quick answers on grades, documents and sampling. The full FAQ library lives in Resources.
The M series runs from grade M5 at the low-viscosity end to grade M1000 at the high-viscosity end, with intermediate grades covering the steps in between. Each tier is tuned to different downstream reaction and dissolution behavior. Exact viscosity windows for each grade are listed on the TDS — send us your target viscosity and we will confirm the matching grade.
It depends on the solution viscosity and water-retention profile you are targeting. General-purpose building-grade HPMC and HEMC are commonly matched with medium-viscosity tiers, while high water-retention, high-viscosity finished products tend to call for the high tier. Share your target specification — or your current supplier's TDS — and our technical team will recommend a grade and back it with a sample.
Yes. Send us the viscosity window you need, or a TDS from your current supplier, and our lab will identify the closest M series grade. The match is confirmed with a pre-shipment sample and its batch COA before you commit to a volume order.
Yes. The M series TDS is issued on request with your inquiry, and the SDS is publicly available per regulatory requirements. A sample COA is also available so you can see exactly which parameters are reported batch by batch before you order.
After we agree on a candidate grade, sample bales are shipped with the matching batch COA so your trial results stay fully traceable. Tell us your application, estimated quantity and destination port, and our export team will handle sample logistics and documentation.
Tell us your application, grade of interest and target viscosity — TDS and quotation within 24 work hours, samples shipped with matching batch COA.
Send your application and target viscosity — we reply with TDS, grade recommendation and quote within 24 work hours.
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