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Poly(vinyl alcohol)

Air & Water Reactions Fire Hazard Health Hazard Reactivity Profile Chemical properties Uses
Poly(vinyl alcohol)
Poly(vinyl alcohol) structure
CAS No.
9002-89-5
Chemical Name:
Poly(vinyl alcohol)
Synonyms
PVA;BP17;BP05;Alvyl;Covol;Lemol;NH 18;NM 11;NM 14;GH 20
CBNumber:
CB7264573
Molecular Formula:
C2H4O
Formula Weight:
44.05256
MOL File:
9002-89-5.mol

Poly(vinyl alcohol) Properties

Melting point:
>300 °C
Boiling point:
-14.5°C (rough estimate)
Density 
1.080 g/cm3
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℃)
Water Solubility 
soluble in hot water
Merck 
14,7585
Stability:
Stable. Combustible. Dust may form explosive mixtures with air. Incompatible with strong oxidizing agents.
FDA 21 CFR
177.1670; 175.300; 176.180; 177.2800; 178.3910; 73.1
Substances Added to Food (formerly EAFUS)
POLYVINYL ALCOHOL
IARC
3 (Vol. 19, Sup 7) 1987
NIST Chemistry Reference
Polyvinyl alcohol(9002-89-5)
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-P308+P311
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
Toxicity LD50 orally in Rabbit: > 20000 mg/kg
NFPA 704
2
0 0

Poly(vinyl alcohol) price More Price(121)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 8.14894 Polyvinyl alcohol, fully hydrolyzed (Mw approx. 145000) for synthesis 9002-89-5 100 g $25.81 2021-03-22 Buy
Sigma-Aldrich 8.43866 Polyvinyl alcohol, fully hydrolized (Mw approx. 60000) for synthesis 9002-89-5 100 g $27.47 2021-03-22 Buy
Sigma-Aldrich 8.21039 Polyvinyl alcohol, fully hydrolyzed (Mw approx. 30000) for synthesis 9002-89-5 100 g $29.69 2021-03-22 Buy
Sigma-Aldrich 1.14266 Polyvinyl alcohol protective colloid for argentometric titration 9002-89-5 100 g $48.2 2021-03-22 Buy
Sigma-Aldrich 10849 Mowiol? 28-99 M 9002-89-5 250g $49 2021-03-22 Buy

Poly(vinyl alcohol) Chemical Properties,Uses,Production

Air & Water Reactions

Water soluble.

Fire Hazard

This chemical is combustible. The dusts of this chemical are a slight explosion hazard when exposed to flame. (NTP, 1992)

Health Hazard

SYMPTOMS: Inhalation of the dust of this chemical may cause irritation of the nose and throat and cause coughing and chest discomfort if heated above 390° F. The dusts may also irritate the eyes. Implantation of this chemical into the breast has been associated with fibrosis. ACUTE/CHRONIC HAZARDS: This compound may be harmful by ingestion and inhalation. It may cause irritation. When heated to decomposition it emits acrid smoke, irritating fumes and toxic fumes of carbon monoxide and carbon dioxide. (NTP, 1992)

Reactivity Profile

Mixtures of alcohols with concentrated sulfuric acid and strong hydrogen peroxide can cause explosions. Example: an explosion will occur if dimethylbenzylcarbinol is added to 90% hydrogen peroxide then acidified with concentrated sulfuric acid. Mixtures of ethyl alcohol with concentrated hydrogen peroxide form powerful explosives. Mixtures of hydrogen peroxide and 1-phenyl-2-methyl propyl alcohol tend to explode if acidified with 70% sulfuric acid [Chem. Eng. News 45(43):73. 1967; J, Org. Chem. 28:1893. 1963]. Alkyl hypochlorites are violently explosive. They are readily obtained by reacting hypochlorous acid and alcohols either in aqueous solution or mixed aqueous- carbon tetrachloride solutions. Chlorine plus alcohols would similarly yield alkyl hypochlorites. They decompose in the cold and explode on exposure to sunlight or heat. Tertiary hypochlorites are less unstable than secondary or primary hypochlorites [NFPA 491 M 1991]. Base-catalysed reactions of isocyanates with alcohols should be carried out in inert solvents. Such reactions in the absence of solvents often occur with explosive violence [Wischmeyer 1969].

Chemical properties

Polyvinyl alcohol is a hydrolysis product of polyvinyl acetate, rather than by the polymerization of monomers; the molecular backbone contains . The specific gravity of this product 1.25 to 1.35 and the melting point is 212 ~ 267 ℃. It is soluble in hot water and hot dimethyl sulfoxide. Animal experiments show that polyvinyl alcohol, without stimulation, causes no significant toxicity upon subcutaneous, intramuscular, intravenous injection. Polyvinyl alcohol resin products appear as white solid with the appearance of sub-floc, granular and powder; it is non-toxic, tasteless, non-polluting and is soluble in water of 80--90 ℃. Its aqueous solution has good adhesiveness and film-forming property; it can resist most organic solvents such as oils, lubricants and hydrocarbons; it has long-chain polyol esterification, etherification, acetalization and other chemical properties.

Uses

It is mainly used in the textile industry, as the raw materials of warp pulp, fabric finishing agent, vinylon fiber; interior and exterior wall paint of the building, adhesives; chemical industry use it as a polymerization emulsifier, dispersant and polyvinyl formal, acetal, butyrate aldehyde resin; paper industry use it as a paper binder; agriculture use it as soil improvers, pesticide adhesion synergist and polyvinyl alcohol film; it can also be used for daily cosmetics and high-frequency quenching agent and so on.

Chemical Properties

white or cream solid

Chemical Properties

Polyvinyl alcohol occurs as an odorless, white to cream-colored granular powder.

Uses

In the plastics industry in molding Compounds, surface coatings, films resistant to gasoline, textile sizes and finishing compositions; can be compounded to yield elastomers to be used in manufacture of artificial sponges, fuel hoses, etc., also in printing inks for plastics and glass, in pharmaceutical finishing, cosmetics, water-sol film and sheeting. Pharmaceutic aid (viscosity increasing agent); ophthalmic lubricant.

Definition

ChEBI: A homopolymer macromolecule obtained by polymerisation of vinyl alcohol.

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.

brand name

Liquifilm Tears (Allergan).

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

Preparation Products


Poly(vinyl alcohol) Suppliers

Global( 386)Suppliers
Supplier Tel Fax Email Country ProdList Advantage
JIANGXI ALPHA HI-TECH PHARMACEUTICAL CO., LTD
86-51085010237
overseamarketing@alphahi-tech.com CHINA 42 58
Henan Tianfu Chemical Co.,Ltd.
0371-55170693
0371-55170693 info@tianfuchem.com CHINA 22607 55
Hangzhou FandaChem Co.,Ltd.
008615858145714
+86-571-56059825 fandachem@gmail.com CHINA 8909 55
Hefei TNJ Chemical Industry Co.,Ltd.
+86-0551-65418679
86-0551-65418697 info@tnjchem.com China 3000 55
Shanxi Naipu Import and Export Co.,Ltd
+8613734021967
kaia@neputrading.com CHINA 1009 58
career henan chemical co
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86-18871470254
027-59599243 linda@hubeijusheng.com CHINA 28229 58
Hebei Guanlang Biotechnology Co., Ltd.
+8619930503282
sales3@crovellbio.com China 5912 58
Xiamen AmoyChem Co., Ltd
+86 592-605 1114
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Hubei xin bonus chemical co. LTD
86-13657291602
027-59338440 linda@hubeijusheng.com CHINA 23035 58

View Lastest Price from Poly(vinyl alcohol) manufacturers

Image Release date Product Price Min. Order Purity Supply Ability Manufacturer
2021-11-08 Poly(vinyl alcohol)
9002-89-5
US $5.00 / KG 50g 99 20 tons Wuhan wingroup Pharmaceutical Co., Ltd
2021-08-14 Poly(vinyl alcohol)
9002-89-5
US $15.00 / KG 1g 99 50ton Shijiazhuang tongyang Import and Export Co., LTD
2021-07-24 Emulsion PVA Chemical Powder Finest-Quality
9002-89-5
US $1100.00 / KG 500KG 99% 5000 Hebei Henghe Import and Export Trading Co. LTD

Poly(vinyl alcohol) Spectrum


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