Polyvinyl Alcohol BP26 is a water-soluble, biodegradable synthetic polymer supplied as a dry, granular solid. Manufactured by Chang Chun Chemical (CCP) under CAS No. 25213-24-5, this partially hydrolyzed PVA grade is formulated for buyers who need consistent viscosity and hydrolysis control in textile sizing, emulsion polymerization, and paper adhesive applications. For industrial buyers evaluating water-soluble polymer options, it offers a documented technical profile backed by a manufacturer Technical Data Sheet (revised October 2022) and a GHS-format Safety Data Sheet.
What Is Polyvinyl Alcohol BP26?
Polyvinyl Alcohol BP26 belongs to the BP-series of PVA grades and is delivered in granular form for straightforward dissolution and handling. As a partially hydrolyzed polymer, it combines water solubility with biodegradability, which makes it a practical raw material for formulators who need a polymer that dissolves in process water without leaving persistent residues. As part of the broader BP-series, this grade sits within a range of viscosity and hydrolysis options offered by the manufacturer; buyers should always confirm the exact grade code on the product label and Technical Data Sheet before placing an order, since different BP-series grades are formulated for different viscosity and hydrolysis targets.
Buyers sourcing this grade for spinning mills, adhesive plants, or paper converting lines can reference the specifications below when comparing it against alternative PVA products, and can request the manufacturer’s Technical Data Sheet and Safety Data Sheet directly through chemicalsstore.com for internal quality documentation.
Technical Specifications of Polyvinyl Alcohol BP26
The table below summarizes the core technical parameters of this grade as published in the manufacturer’s Technical Data Sheet.
| Parameter | Value |
|---|---|
| Grade | BP26 |
| Viscosity (4% solution, 20℃) | 50–58 cps |
| Hydrolysis | 86.0–89.0 mole% |
| Volatile Content | < 5 wt% |
| Ash Content (as Na₂O) | < 0.5 wt% |
| pH (4% solution, 20℃) | 5–7 |
Physical and Chemical Properties
According to the Safety Data Sheet, the physical and chemical properties of this product are as follows:
- CAS Number: 25213-24-5
- Appearance: White solid, granular form
- Odour: Odourless
- Melting point/freezing point: 180–230℃
- Decomposition temperature: >220℃
- Density: 1.23–1.31 g/cm³
- VOC content (EC): 2.00%
Recommended Applications for Polyvinyl Alcohol BP26
The manufacturer recommends this product for three primary application areas. Buyers can match these uses against their own process requirements before requesting samples or a formal quotation.
- Warp sizing agent – Functions as an efficient sizing agent for spun and filament yarn, forming a protective film on the yarn surface that reduces breakage and hairiness during high-speed weaving.
- Protective colloid in emulsion polymerization – Acts as a protective colloid during emulsion polymerization, stabilizing the dispersion and supporting formulators who manufacture adhesives, coatings, and other auxiliary agent products.
- Paper adhesive production – Used in the production of paper adhesives, where its film-forming and bonding characteristics support converters and manufacturers active in the adhesives industry.
Safety, Handling, and Storage for Polyvinyl Alcohol BP26
Per its Safety Data Sheet, this product is not classified as hazardous according to the Globally Harmonized System (GHS), and no hazard pictogram or signal word is required for the material as supplied. The main handling precaution noted in the SDS relates to dust: powdered material may form explosive dust-air mixtures, so buyers should prevent dust formation, keep ignition sources away, and use local exhaust ventilation where dust or aerosol is generated during handling.
For storage, the SDS recommends keeping the material in a cool, dry place in tightly closed receptacles, protected from humidity, heat, and direct sunlight. Recommended personal protective equipment includes nitrile rubber gloves meeting EN 374 (or equivalent) and goggles during refilling operations.
On ecological data, the SDS reports the substance as easily biodegradable, with degradation greater than 90% under the Zahn-Wellens test (OECD 302B), and an aquatic toxicity LC50/96h greater than 10,000 mg/l (fish), consistent with its marketing as a biodegradable polymer.
Packaging and Supply Chain Support
Polyvinyl Alcohol BP26 is packed 20 kg net in one multi-ply paper bag (a three-layer paper/plastic composite bag), matching standard export packaging for bulk industrial PVA grades. Composite material buyers, chemical traders, and industrial formulators sourcing this product can rely on chemicalsstore.com for supply chain resource support, including recommended international brand products where applicable and coordination on order volumes, lead times, and documentation requests.
Before placing a bulk order, buyers are encouraged to request the current Technical Data Sheet and Safety Data Sheet, confirm the required viscosity and hydrolysis range for their process, and align packaging and labeling requirements with their destination country’s regulatory expectations.
Frequently Asked Questions About Polyvinyl Alcohol BP26
What is the hydrolysis degree of Polyvinyl Alcohol BP26?
It has a hydrolysis degree of 86.0–89.0 mole%, as published in the manufacturer’s Technical Data Sheet.
Is this product classified as a hazardous substance?
No. According to its Safety Data Sheet, this product is not classified as hazardous under the GHS. Standard precautions against dust formation still apply during handling.
What is the CAS number?
The CAS number is 25213-24-5, as listed on the product’s Safety Data Sheet.
Is it biodegradable?
Yes. Its Safety Data Sheet reports greater than 90% degradation under the Zahn-Wellens test (OECD 302B), classifying it as easily biodegradable.
What packaging is available?
It is supplied in 20 kg net multi-ply paper bags, suitable for standard industrial handling and export shipment.
Which industries use it?
It is used in textile warp sizing, emulsion polymerization for adhesives and coatings, and paper adhesive manufacturing.
How should it be stored?
Store it in a cool, dry place in tightly closed containers, protected from heat, humidity, and direct sunlight.
To request current availability, minimum order quantities, or a formal quotation for Polyvinyl Alcohol BP26, contact the chemicalsstore.com sourcing team with your target volume and application details.
