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9011-14-7

9011-14-7 structural image
Product Name: Poly(methyl methacrylate)
Formula: (C5H8O2)x
Synonyms: Isotactic methyl methacrylate polymer;Isotactic PMMA;Isotactic poly(methyl methacrylate);PMMA;Poly(methacrylic acid methyl ester)
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CHEMICAL AND PHYSICAL PROPERTIES

Physical Description Methyl methacrylate monomer appears as a clear colorless liquid. Slightly soluble in water and floats on water. Vapors heavier than air. Vapors irritate the eyes and respiratory system. Containers must be heavily insulated or shipped under refrigeration. An inhibitor such as hydroquinone, hydroquinone methyl ester and dimethyl t-butylphenol is added to keep the chemical from initiating polymerization. The chemical may polymerize exothermically if heated or contaminated with strong acid or base. If the polymerization takes place inside a container, the container may rupture violently. Used to make plastics.
Color/Form Colorless volatile liquid
Odor Characteristic quality: sulfur-like, sweet, sharp; hedonic tone: unpleasant
Boiling Point 213.8 °F at 760 mmHg (NTP, 1992)
Melting Point -54 °F (NTP, 1992)
Flash Point 50 °F (NTP, 1992)
Solubility 1 to 10 mg/mL at 63.5 °F (NTP, 1992)
Density 0.945 at 68 °F (USCG, 1999) - Less dense than water; will float
Vapor Density 3.45 (NTP, 1992) - Heavier than air; will sink (Relative to Air)
Vapor Pressure 40 mmHg at 77.9 °F (NTP, 1992)
LogP log Kow = 1.38
Autoignition Temperature 790 °F (USCG, 1999)
Decomposition When heated to decomposition it emits acrid smoke and irritating fumes.
Heat of Combustion -11,400 BTU/lb = 6,310 cal/g = -264X10+5 J/kg (estimated)
Heat of Vaporization 36.0 kJ/mol at 100.5 °C
Surface Tension 0.028 N/m at 20 °C.
Ionization Potential 9.70 eV
Polymerization May polymerize if subjected to heat, polymerization catalysts (eg, azoisobutyronitrile, dibenzoyl peroxide, di-tert-butyl peroxide, propionaldehyde), strong oxidizers, or ultraviolet light.
Odor Threshold Odor Threshold Low: 0.01 [mmHg] Odor Threshold High: 0.46 [mmHg] Detection odor threshold from AIHA (mean = 0.049 ppm)
Refractive Index Index of refraction: 1.4142 at 20 °C
Relative Evaporation Rate 3.1 (Butyl acetate = 1)
Kovats Retention Index 723 672 696 700 694 677 699 677 677 677 710 699 696 694.1 696.1 696 696 699 692.9 677 699
Other Experimental Properties Conversion factor: 1 ppm in air = 4.1 mg/cu m
Chemical Classes Plastics & Rubber -> (Meth)acrylates

COMPUTED DESCRIPTORS

Molecular Weight 100.12 g/mol
XLogP3 1.4
Hydrogen Bond Donor Count 0
Hydrogen Bond Acceptor Count 2
Rotatable Bond Count 2
Exact Mass 100.052429494 g/mol
Monoisotopic Mass 100.052429494 g/mol
Topological Polar Surface Area 26.3 Ų
Heavy Atom Count 7
Formal Charge 0
Complexity 94.3
Isotope Atom Count 0
Defined Atom Stereocenter Count 0
Undefined Atom Stereocenter Count 0
Defined Bond Stereocenter Count 0
Undefined Bond Stereocenter Count 0
Covalently-Bonded Unit Count 1
Compound Is Canonicalized Yes

PRODUCT INTRODUCTION

description

Methyl methacrylate monomer appears as a clear colorless liquid. Slightly soluble in water and floats on water. Vapors heavier than air. Vapors irritate the eyes and respiratory system. Containers must be heavily insulated or shipped under refrigeration. An inhibitor such as hydroquinone, hydroquinone methyl ester and dimethyl t-butylphenol is added to keep the chemical from initiating polymerization. The chemical may polymerize exothermically if heated or contaminated with strong acid or base. If the polymerization takes place inside a container, the container may rupture violently. Used to make plastics.

RELATED SUPPLIERS

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