What is the difference between "Fully Hydrolyzed" and "Partially Hydrolyzed" PVA?

The degree of hydrolysis affects water solubility and resistance. Partially Hydrolyzed PVA (e.g., 87-89% hydrolysis, like 17-88) is soluble in cold water and is widely used in adhesives and films. Fully Hydrolyzed PVA (e.g., 98-99% hydrolysis, like 17-99) typically requires hot water (approx. 85°C+) to dissolve and offers higher water resistance and tensile strength after drying.

How is PVA CAS 9002-89-5 used in the construction industry?

In construction, PVA powder is used as an additive in cement-based mortars, tile adhesives, and putties. It improves water retention, workability, and the bond strength of the mortar to the substrate.

Polyvinyl Alcohol(PVA) CAS 9002-89-5

Polyvinyl Alcohol (CAS 9002-89-5), commonly abbreviated as PVA, PVOH, or PVAL, is a water-soluble synthetic polymer utilizing its excellent film-forming and adhesive properties to serve as a versatile binder in industrial applications. Chemically identified as a polyhydroxy polymer, this white (or slightly yellowish) granule/powder acts as a barrier to oils and greases while providing high tensile strength and flexibility. It is available in various degrees of hydrolysis (e.g., Partially Hydrolyzed 87-89% or Fully Hydrolyzed 98-99%) and viscosity, which determine its specific solubility and water resistance. It is extensively integrated into textile sizing (to strengthen yarns), paper coatings, wood adhesives (white glue), and increasingly in construction as a cement additive to improve adhesion and flexibility. Additionally, specialized grades are used for water-soluble packaging films (e.g., detergent pods). We ensure bulk supply capabilities for this material, providing access to competitive factory pricing and customized specifications to meet specific grade requirements . Full technical documentation, including MSDS, TDS, COA, is available to support compliance and safety protocols.

CAS: 9002-89-5
Synonyms: PVA, PVOH, PVAL, Vinyl alcohol polymer, Polyviol, Ethenol homopolymer
Einecs: 209-008-0
Molecular Formula: (C₂H₄O)n
Grade: Industrial Grade (Powder / Granular)
Package: 25/50 kg bag (standard); Jumbo bag (500–1000 kg) optional

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Product Description

Polyvinyl Alcohol (PVA) is a synthetic hydrophilic polymer produced by hydrolyzing polyvinyl acetate. It appears as a white to off-white powder or granular solid and dissolves in water upon heating, forming clear solutions with excellent film-forming capabilities. PVA is non-toxic, odorless, and exhibits high tensile strength, flexibility, and chemical resistance in formulated products.

1 Physicochemical Properties (Typical)

2 Applications

3 Storage Conditions

4 Safety Precautions

Physicochemical Properties (Typical)

These are typical reference values; final specifications should follow your batch COA.

Item	Typical Specification
Appearance	White to off-white powder or granules
CAS Number	9002-89-5
EC / EINECS	209-008-0
Molecular Formula	(C₂H₄O)n
Average Molecular Weight	varies with grade (typically 30,000–150,000+)
Degree of Hydrolysis	80–99% (depending on grade)
Solubility	Soluble in hot water; essentially insoluble in most organic solvents
pH (aqueous solution)	~5–7 (neutral to slight acid)
Odor	Odorless

Applications

Adhesives & coatings: paper, wood, textiles, and specialty paints
Film & packaging: water-soluble films, PVA bags, laminates
Construction: cement modifiers, tile adhesives
Textile industry: warp sizing agent
Paper processing: surface sizing and strength enhancement
Ceramics & specialty composites: binder and shaping aid

Storage Conditions

Store in original sealed packaging in a cool, dry, and ventilated warehouse.
Avoid moisture, heat, and direct sunlight to prevent caking.
Keep away from incompatible substances such as strong oxidizers.
Recommended storage temperature: room temperature.
Typical shelf life: 12–24 months under proper conditions.

Safety Precautions

Avoid generating dust; use local exhaust ventilation if airborne dust is present.
Wear protective gloves, safety glasses and dust mask during handling.
In case of dust contact with eyes or skin, rinse with water.
Avoid prolonged inhalation of dust particles; maintain good housekeeping.
Ensure compatibility with formulation components before use.

FAQ - Technical & Supply Chain

Q:
What is the difference between "Fully Hydrolyzed" and "Partially Hydrolyzed" PVA?

A: The degree of hydrolysis affects water solubility and resistance. Partially Hydrolyzed PVA (e.g., 87-89% hydrolysis, like 17-88) is soluble in cold water and is widely used in adhesives and films. Fully Hydrolyzed PVA (e.g., 98-99% hydrolysis, like 17-99) typically requires hot water (approx. 85°C+) to dissolve and offers higher water resistance and tensile strength after drying.
Q:
How is PVA CAS 9002-89-5 used in the construction industry?

A: In construction, PVA powder is used as an additive in cement-based mortars, tile adhesives, and putties. It improves water retention, workability, and the bond strength of the mortar to the substrate.

Ordering & Documentation

Key information for document requests, quotations, and supply planning.

Documents

COA, TDS, SDS/MSDS and packing details are available on request.

Quotation

Send the CAS number, grade, quantity, packing preference and destination.

Sample & Supply

Support is available for samples, trial orders, bulk and repeat supply.

Storage & Shipping

Product-specific conditions are confirmed before order.

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