Product Name: Methyl Sulfonyl Methane (MSM)
CAS No.: 67-71-0
Methyl Sulfonyl Methane (MSM)
Trade name: Dimethyl sulfone ; MethylSulfonyl Methane (MSM)
CAS No.:[67-71-0]
(1)Brief
Trade name: Dimethyl sulfone ; MethylSulfonyl Methane (MSM)
CAS No.:[67-71-0]
Molecular formula: (CH3)2SO2
Molecular weight: 94
Structural formula : 
Appearance:white crystalline powder
Assay NLT 99.9%
Use:Nourishment additive
Packing: 25kg cardboard drum
Normal spec.: 20-40 mesh, 40-80 mesh, 80-100mesh(
silica gel can be added upon clients' requests.)
Special spec.:Upon clients' requests.
(2) Quality index
ITEMS STANDARD
A ppearance White crystalline
Boiling point 238 °C
Melting point 108-109 °C
Assay(GC) 99.9%min
Moisture Contain 0.5%max
E.Coli Negative
Heavy metals 5ppmmax
SALMONELLA NEGATIVE
(3)Property
Easily soluble in water, ethanol and acetone, slightly soluble in toluene and chloroform, water solubility: 5°C 10g,10°C 16g,30 °C 37g,60°C 120g,95°C 250g; solubility in methanol -10 °C 1g,0°C 3.5g,30 °C 20g,60 °C 34g; its water solution is neutral.
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Property
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White needle-like crystal
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M.P. ( 760mmHg )
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109
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B.P. ( 760mmHg )
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238
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Density (d4110 )
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1.1702
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Specific weight (26 °C)
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1.450-1.455
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Viscosity (125 °C)
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1.140CP( centipoise )
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Refractive index (20 °C)
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1.4228
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Dielectric constant (110 °C)
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47.39 MHZ
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Dipole moment (20 °C)
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4.25Debye
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Vapor tension
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112 °C
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8.6mmHg
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250 °C
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769.4mmHg
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Flash point ( open )
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143 °C
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Specific heat
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Liquid 121 °C
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0.53cal/g·°C
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Solid 25 °C
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0.31 cal/g ·°C
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Heat of combustion ( 25 °C constant volume )
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-429.42 Kcal/mol (-428.29)
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Heat of formation ( 180 °C)
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-107.5 Kcal/mol(-108.3)
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Heat of melting ( 9 °C)
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4.374 Kcal/mol
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Heat of sublimation (25 °C , 76.0mmHg)
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18.4 Kcal/mol
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Hheat of vaporization (25 °C)
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15.1 Kcal/mol
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(4)Application
It is widely used in medical area
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