Chemcial name: Acetic acid, ethenyl ester, polymer with 1-ethenyl-2-pyrrolidinone (CAS NO.25086-89-9)

Molecular Formula :(C₆H₉ON)n×（C₄H₆O₂)m (n=1.2m)
Boiling Point:  217.6 °C at 760 mmHg 
Flash Point:  93.9 °C  
Enthalpy of Vaporization: 45.39 kJ/mol 
Vapour Pressure: 0.132 mmHg at 25°C
Structure Descriptors of Acetic acid, ethenyl ester, polymer with 1-ethenyl-2-pyrrolidinone (CAS NO.25086-89-9):
  IUPAC Name: ethenyl acetate; 1-ethenylpyrrolidin-2-one
  Canonical SMILES: CC(=O)OC=C.C=CN1CCCC1=O
  InChI: InChI=1S/C6H9NO.C4H6O2/c1-2-7-5-3-4-6(7)8;1-3-6-4(2)5/h2H,1,3-5H2;3H,1H2,2H3 
  InChIKey: FYUWIEKAVLOHSE-UHFFFAOYSA-N
Product Categories: Hair Care; Polymers; Hydrophobic Polymers; Poly(vinylpyrrolidone); Vinylpyridine and Vinypyrrolidone Polymers

 Acetic acid, ethenyl ester, polymer with 1-ethenyl-2-pyrrolidinone (CAS NO.25086-89-9) is the main raw materials used in cosmetics, shampoo hair, mousse, etc,it is  also used for surfactants, pharmaceutical and other industries.

Moderately toxic by ingestion. Combustible, especially in powdered form. Incompatible with strong oxidising agents, strong reducing agents. When heated to decomposition it emits toxic vapors of NO_x.
Hazard Codes: Xi
Risk Statements: 10-36/37/38 
R10:Flammable. 
R36/37/38:Irritating to eyes, respiratory system and skin.
Safety Statements: 22-24/25-36/37/39-26-16 
S22:Do not breathe dust. 
S24/25:Avoid contact with skin and eyes. 
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection. 
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 
S16:Keep away from sources of ignition.
RIDADR: UN 1987 3/PG 2
WGK Germany: 1
RTECS: AH3539000