Poly(vinyl alcohol) PVA resin

Product Overview

Poly(vinyl alcohol) (PVA, also written polyvinyl alcohol / polyvinyl alcohol PVOH / PVOH / PVA) — CAS 9002-89-5 — is a water-soluble, high-molecular-weight synthetic polymer supplied as powder, flakes or aqueous solutions. PVA is produced by hydrolysis of poly(vinyl acetate) and its functional OH groups give it strong film-forming, adhesive and emulsifying properties. Grades vary by degree of hydrolysis and polymerization (examples: PVA 1788, PVA 2488, Mowiol 4-88, PVA 224, PVA 2688), enabling selection for cold-water-soluble or fully/hydrolyzed performance.

Particle Size: from flake to 200 mesh

Polyvinyl alcohol is a solid that can be in the form of white powder, flakes or floc.
Glass transition temperature is 60~85℃. Polyvinyl alcohol contains many alcohol groups, is polar, and can form hydrogen bonds with water, so it can be dissolved in polar water. Polyvinyl alcohol is also soluble in hot hydroxyl-containing solvents such as glycerol, phenol, etc., but insoluble in general organic solvents such as methanol, benzene, acetone, and gasoline.

Key Properties & Typical Specifications

Melting Point	>300 °C
Boiling Point	-14.5°C (rough estimate)
Bulk Density	400-670kg/m3
Density	1.080 g/cm3
Tg	73
Tg	99
Tg	99°C
Refractive Index	1.3810 (estimate)
Fp	79°C
Storage Temp.	Store below +30°C.
Solubility	H2O: soluble (hot)
Form	Powder
Color	White to cream
Odor	at 100.00%. odorless
PH	3.5-7.0 (40g/l, H2O, 20℃)
Water Solubility	Soluble in hot water

Typical Applications

Textile: warp sizing and fabric finishing (PVA improves weaving efficiency and reduces fiber breakage).
Adhesives & paper: PVA as paper adhesive, bookbinding glues and general adhesives (polyvinyl alcohol adhesive / polyvinyl alcohol binder).
Coatings & construction: interior/exterior wall coatings, cement additives, surface sizing (PVA used as thickener and binder).
Packaging & films: water-soluble films, packaging laminates and protective coatings.
Pharmaceutical & cosmetics: excipient, film former and ophthalmic/lubricating agents (use pharma/USP grade where required).
Agriculture & specialty: seed coatings, pesticide adhesion promoters and soil conditioners.
Industrial formulators: emulsifier, dispersant, rheology modifier and binder in inks, ceramics and composites.

Mainly used in the textile industry for warp sizing, fabric finishing agents, and vinylon fiber raw materials; in the construction and decoration industry for 107 glue, interior and exterior wall coatings, and adhesives; in the chemical industry as polymer emulsifiers, dispersants, and polyvinyl formal and acetal. Acetaldehyde, butyral resin; used as paper adhesive in the papermaking industry; used in agriculture as soil conditioner, pesticide adhesion synergist and polyvinyl alcohol film; also used in daily cosmetics and high-frequency quenching agent, etc. aspect.

Grades, Packaging & Supply

Common grades: PVA-1788, PVA-2488, PVA-224, PVA-2688, Mowiol 4-88, fully hydrolyzed and partially hydrolyzed grades; pure PVA and industrial PVA available.
Forms & packaging: 25 kg bags (powder), 900 kg IBCs (liquid), bulk FCL for large orders.
Supply capability: stable stock for bulk and trial orders.

Performance Highlights & Buyer Benefits

Excellent film formation & mechanical strength (ideal for coatings, films and binders).
Tailorable solubility & viscosity via degree of hydrolysis and polymerization (choose cold-water-soluble or fully hydrolyzed).
Good chemical & abrasion resistance compared with many water-soluble polymers.
Low toxicity & biocompatibility for selected medical and cosmetic uses (choose pharmaceutical grade).

Safety, Handling & Storage

Storage: store in cool, dry conditions; keep containers tightly sealed to avoid moisture uptake.
Handling: dust may irritate respiratory tract — use dust control and PPE. Liquid PVA requires standard chemical handling (gloves, goggles).
Fire & stability: combustible as powder/dust; avoid strong oxidizers.

Why choose Greenchem International?

Long export experience and reliable supply chain with batch COA shared before quotation.
Flexible MOQs — samples available.
Technical support for grade selection (textile, pharma, adhesives, coatings).
Competitive polyvinyl alcohol price and global shipping options.

Ordering & Inquiry

To buy PVA powder or request liquid PVA for your application, please provide required grade (e.g., PVA 1788 / Mowiol 4-88), quantity and delivery country. We will reply with COA, lead time and a competitive polyvinyl alcohol price. Request a sample or quote now.