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high purity

Dow Monomers Dow Monomers, a n excellent group of re­active unsaturated hydrocarbons, a r e now being oifered for immediate delivery! These monomers, comprising one of the most complete lines available, include: Styrene, Butadiene, Vinylidene Chloride, a lpha Methyl Styrene, Divinyl Benzene (and others). These monomers are extremely useful as inter­mediates in organic synthesis, particularly in the preparation of polymers or copoly­mers. Long experience m the production of these materials permits Dow to offer products of high purity. It also enables Dow to provide helpful technical service and information, especially in the fields of polymerization and copolymerization. Call a Dow sales office now.

Structural Name Formula

X - - v H H

Styrene < > - C = C X — y H

Butadiene JJ H

.CI Vinylidene H2 C = C

Chloride XQJ

alpha Methyl Styrene (\ — C = C H2

\y CH3

Purity of Commercial

Material

99 +

98.5 +

99 +

95 or better

Boiling Point °C.

145.2

- 4 . 5

31.7

166

Density 25°C.

.9015

0.6149

1.2099

.9062

Freezing Point °C.

- 3 0 . 6

- 1 0 9

- 1 2 3

- 2 3 . 2

Refractive Index

at 25°C.

1.5439

1.4228

1.5359

Flash Point °C.

+ 3 1

- 8 5

- 1 0

+ 4 8

Molecular Weight

104

54

97

118

NOTE: The physical propert ies listed above a r e those for pure mater ia ls . Com­mercial products of the indicated purity will h a v e slightly different properties.

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Do you need an unusual material? Look for it in Dow's "Library" of Special Chemicals. Dow has, or can make, a vast variety of the rarer chemical compounds . . . will be glad to consult with you about your particular requirements.

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