CAS 9002-89-5 Poly(vinyl alcohol) 1788, degree of alcoholysis 87.0~89.0%(mol/mol)

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Poly(vinyl alcohol) 1788, degree of alcoholysis 87.0~89.0%(mol/mol)

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Catalog Number

ACM9002895-18

CAS Number

9002-89-5

Product Name

Poly(vinyl alcohol) 1788, degree of alcoholysis 87.0~89.0%(mol/mol)

Structure

Category

Polymers

Description

Polyvinyl alcohol appears as odorless white to cream-colored granules or powder. Pure aqueous solutions are neutral or faintly acid and subject to mold growth. pH (4% aqueous solution): 5-8. Strongly hydrophilic. (NTP, 1992);Odourless, tasteless, translucent, white or cream-coloured granular powder;COLOURLESS-TO-WHITE SOLID IN VARIOUS FORMS.

IUPAC Name

ethenol

Molecular Weight

44.05g/mol

Molecular Formula

(C2H3OR)nwhere R = H or COCH3;(CH2CHOH-)n;CH2CHOH;C2H4O

Canonical SMILES

C=CO

InChI

InChI=1S/C2H4O/c1-2-3/h2-3H,1H2

InChI Key

IMROMDMJAWUWLK-UHFFFAOYSA-N

Boiling Point

644 °F at 760 mm Hg approximately (NTP, 1992);644 °F at 760 mm Hg /approximately/

Melting Point

442 °F (decomposes) (NTP, 1992);>200 °C; other melting points: 212-267 °C

Flash Point

175 °F (NTP, 1992);175 °F (79 °C) (open cup);79 °C o.c.

Density

1.329 (NTP, 1992);1.91 to 1.31;1.19-1.31 g/cm³

Solubility

Soluble (NTP, 1992);Soluble in water; sparingly soluble in ethanol;Soluble in water;Solubility in water: good;Water solubility increases as molecular weight decreases;Slightly soluble in ethanol, but insoluble in other organic solvents;Essentially soluble in hot and cold water, but those coded 20-105 require alcohol-water mixtures; Insoluble in petroleum solvents;Practically insoluble in animal and vegetable oils; insoluble in aromatic hydrocarbons, esters, ether, acetone; practically insoluble in chlorinated hydrocarbons;Solubility in water: good

Color/Form

Dry, unplasticized powders are white or cream colored;Colorless, white or cream, amorphous powder

Complexity

10.3

Covalently-Bonded Unit Count

EC Number

209-183-3;618-340-9

Exact Mass

44.026215g/mol

Formal Charge

Heavy Atom Count

ICSC Number

1489

MeSH Entry Terms

Alcohol, Polyvinyl;Liquifilm Tears;Polyvinyl Alcohol;Polyviol;Tears, Liquifilm

Monoisotopic Mass

44.026215g/mol

NSC Number

108129

Odor

Odorless

Other Experimental

Polymer average molecular weight: 120,000;Softens at about 200 °C with decomposition;Subject to mold growth;Decomposes at 228 °C;Undergoes chemical reactions typical of compound with secondary hydroxyl groups, including esterification and etherification;Strength, elongation, tear resistance, and flexibility improve with increasing molecular weight;Tensile strength up to 22,000 psi

Refractive Index

Index of refraction: 1.49-1.53

Rotatable Bond Count

RTECS Number

TR8100000

Stability

Stable under recommended storage conditions.

Vapor Pressure

Negligible (NTP, 1992);Negligible

Viscosity

/p>4,8 to 5,8 mPa.s (4 % solution at 20 °C) corresponding to an average molecular weight of 26 000-30 000 Da

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