Poly(vinyl alcohol)
- CAS No.
- 9002-89-5
- Chemical Name:
- Poly(vinyl alcohol)
- Synonyms
- PVA;PVA-124;Gohsenol;poly(vinyl alcohol) macromolecule;Polyvinyl alcohol, 86-89% hydrolyzed, medium molecular weight;Poval;PVA-103;POLYVINYL ALCOHOL 2000;POLYVINYL ALCOHOL (PVA);PVA-224
- CBNumber:
- CB7264573
- Molecular Formula:
- C2H4O
- Molecular Weight:
- 44.05256
- MOL File:
- 9002-89-5.mol
- MSDS File:
- SDS
- Modify Date:
- 2025/1/20 18:04:28
| Melting point | >300 °C |
|---|---|
| Boiling point | -14.5°C (rough estimate) |
| Density | 1.080 g/cm3 |
| Tg | 73 |
| Tg | 99 |
| Tg | 99°C |
| bulk density | 400-670kg/m3 |
| refractive index | 1.3810 (estimate) |
| Flash point | 79°C |
| storage temp. | Store below +30°C. |
| solubility | H2O: soluble (hot) |
| form | Powder |
| color | White to cream |
| PH | 3.5-7.0 (40g/l, H2O, 20℃) |
| Odor | at 100.00?%. odorless |
| Water Solubility | soluble in hot water |
| Merck | 14,7585 |
| Dielectric constant | 1.9（Ambient） |
| Stability | Stable. Combustible. Dust may form explosive mixtures with air. Incompatible with strong oxidizing agents. |
| NIST Chemistry Reference | Polyvinyl alcohol(9002-89-5) |
| IARC | 3 (Vol. 19, Sup 7) 1987 |
| EPA Substance Registry System | Polyvinyl alcohol (9002-89-5) |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |  GHS08 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Warning | |||||||||
| Hazard statements | H371 | |||||||||
| Precautionary statements | P260 | |||||||||
| Hazard Codes | Xn | |||||||||
| Risk Statements | 23/24/25-36/38-39/23/24/25-68/20/21/22-20/21/22 | |||||||||
| Safety Statements | 26-36/37-45-24/25 | |||||||||
| WGK Germany | 1 | |||||||||
| RTECS | TR8100000 | |||||||||
| Autoignition Temperature | 450 °C | |||||||||
| TSCA | Yes | |||||||||
| HS Code | 39053000 | |||||||||
| Hazardous Substances Data | 9002-89-5(Hazardous Substances Data) | |||||||||
| Toxicity | LD50 orally in Rabbit: > 20000 mg/kg | |||||||||
| NFPA 704 |
|
Poly(vinyl alcohol) price More Price(98)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich(India) | P8136 | Poly(vinyl alcohol) 87-90% hydrolyzed, average mol wt 30,000-70,000 | 9002-89-5 | 250G | ₹6100 | 2022-06-14 | Buy |
| Sigma-Aldrich(India) | P8136 | Poly(vinyl alcohol) 87-90% hydrolyzed, average mol wt 30,000-70,000 | 9002-89-5 | 1KG | ₹16420 | 2022-06-14 | Buy |
| Sigma-Aldrich(India) | P1763 | Poly(vinyl alcohol) Fully hydrolyzed | 9002-89-5 | 250G | ₹5964.58 | 2022-06-14 | Buy |
| Sigma-Aldrich(India) | P1763 | Poly(vinyl alcohol) Fully hydrolyzed | 9002-89-5 | 1KG | ₹18272.6 | 2022-06-14 | Buy |
| Sigma-Aldrich(India) | 907766 | Stabilizer-Nano | 9002-89-5 | 5G | ₹10684.28 | 2022-06-14 | Buy |
Poly(vinyl alcohol) Chemical Properties,Uses,Production
Uses
NaA zeolite particles have been dispersed in a poly(vinyl alcohol) matrix to prepare a mixed-matrix membrane to study the pervaporative separation of water-butanol mixtures. Poly (vinyl alcohol)/gelatin based biocompatible polymeric scaffolds have been used to design for 3D cancer models.
Production Methods
Polyvinyl alcohol is produced through the hydrolysis of polyvinyl acetate. The repeating unit of vinyl alcohol is not used as the starting material because it cannot be obtained in the quantities and purity required for polymerization purposes. The hydrolysis proceeds rapidly in methanol, ethanol, or a mixture of alcohol and methyl acetate, using alkalis or mineral acids as catalysts.
Definition
ChEBI: Polyvinyl alcohol is a homopolymer macromolecule obtained by polymerisation of vinyl alcohol. It is used as a pharmaceutic aid and ophthalmic lubricant as well as in the manufacture of surface coatings artificial sponges, cosmetics, and other products.
General Description
Polyvinyl alcohol (PVOH) is a hydrophilic linear polymer which forms copolymers of vinyl alcohol and vinyl acetate. Hence, the structural properties of polyvinyl alcohol polymers depend on the extent of polymerization and hydrolysis. Such changes cause both chemical and physical modifications such as esterification, etherification, crystallization, ion-polymer complexation in the polymer. Modified- PVOH structures are useful in biomedical applications.
Pharmaceutical Applications
Polyvinyl alcohol is used primarily in topical pharmaceutical and ophthalmic formulations. It is used as a stabilizing agent for emulsions (0.25–3.0% w/v). Polyvinyl alcohol is also used as a viscosity-increasing agent for viscous formulations such as ophthalmic products. It is used in artificial tears and contact lens solutions for lubrication purposes, in sustained-release formulations for oral administration, and in transdermal patches. Polyvinyl alcohol may be made into microspheres when mixed with a glutaraldehyde solution.
Industrial uses
Polyvinyl alcohol is a tough, whitish polymerthat can be formed into strong films, tubes, andfibers that are highly resistant to hydrocarbonsolvents. Although polyvinyl alcohol is one ofthe few water-soluble polymers, it can be renderedinsoluble in water by drawing or by theuse of cross-linking agents.
Safety Profile
Questionable carcinogen with experimental carcinogenic and tumorigenic data by implant route. Flammable when exposed to heat or flame; can react with oxidizing materials. Slight explosion hazard in the form of dust when exposed to flame. To fight fire, use alcohol foam, CO2, dry chemical. When heated to decomposition it emits acrid smoke and irritating fumes.
Safety
Polyvinyl alcohol is generally considered a nontoxic material. It is
nonirritant to the skin and eyes at concentrations up to 10%;
concentrations up to 7% are used in cosmetics.
Studies in rats have shown that polyvinyl alcohol 5% w/v
aqueous solution injected subcutaneously can cause anemia and
infiltrate various organs and tissues.
(mouse, oral): 14.7 g/kg
(rat, oral): >20 g/kg
storage
Polyvinyl alcohol is stable when stored in a tightly sealed container in a cool, dry place. Aqueous solutions are stable in corrosionresistant sealed containers. Preservatives may be added to the solution if extended storage is required. Polyvinyl alcohol undergoes slow degradation at 100°C and rapid degradation at 200°C; it is stable on exposure to light.
Incompatibilities
Polyvinyl alcohol undergoes reactions typical of a compound with secondary hydroxy groups, such as esterification. It decomposes in strong acids, and softens or dissolves in weak acids and alkalis. It is incompatible at high concentration with inorganic salts, especially sulfates and phosphates; precipitation of polyvinyl alcohol 5% w/v can be caused by phosphates. Gelling of polyvinyl alcohol solution may occur if borax is present.
Regulatory Status
Included in the FDA Inactive Ingredients Database (ophthalmic preparations and oral tablets). Included in nonparenteral medicines licensed in the UK. Included in the Canadian List of Acceptable Non-medicinal Ingredients.
Poly(vinyl alcohol) Preparation Products And Raw materials
Raw materials
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chevron_right| Supplier | Tel | Country | ProdList | Advantage | Inquiry |
|---|---|---|---|---|---|
| UNILOSA INTERNATINAL PRIVATE LIMITED | +91-9999069917 +91-9999069917 | New Delhi, India | 152 | 58 | Inquiry |
| THRIX CHEMICALS | +91-6351475763 +91-6351475763 | Gujarat, India | 27 | 58 | Inquiry |
| Indokem Limited | +91-2224450050 +91-2261236767 | Maharashtra, India | 1 | 58 | Inquiry |
| ARRAKIS INDUSTRIES LLP | +91 74995 32711 | Maharashtra, India | 1353 | 58 | Inquiry |
| ALPHA CHEMIKA | +91-22-22061123 +91-22-66382501 | Mumbai, India | 1679 | 43 | Inquiry |
| Scientific OEM | +91-22- 2343 7546 / 2341 3094 | New Delhi, India | 1994 | 38 | Inquiry |
| Central Drug House(P) Ltd. | 91-11-49404040 | New Delhi, India | 6157 | 58 | Inquiry |
| LOBA CHEMIE PVT.LTD. | 91-22-6663 6699 | Mumbai, India | 3075 | 58 | Inquiry |
| Desai Varun Rasayan Private Limited | 08047632054 | Mumbai, India | 5 | 58 | Inquiry |
| Riddhi Chem Impex | 07942538103 | Mumbai, India | 21 | 58 | Inquiry |
| Supplier | Advantage |
|---|---|
| UNILOSA INTERNATINAL PRIVATE LIMITED | 58 |
| THRIX CHEMICALS | 58 |
| Indokem Limited | 58 |
| ARRAKIS INDUSTRIES LLP | 58 |
| ALPHA CHEMIKA | 43 |
| Scientific OEM | 38 |
| Central Drug House(P) Ltd. | 58 |
| LOBA CHEMIE PVT.LTD. | 58 |
| Desai Varun Rasayan Private Limited | 58 |
| Riddhi Chem Impex | 58 |
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