Product Description and Uses
OPD is a chemical intermediate used in the synthesis of fungicides, corrosion inhibitors, pigments and pharmaceuticals. OPD is also used to remove elemental sulfur in mining ores, and to remove aldehyde color formers in polymeric products.
DuPont offers OPD in two product grades. OPD Technical is preferred for most uses, and is supplied in flake form and as a clear molten liquid in bulk. OPD Technical flakes are light tan and tend to darken in storage. OPD Pure is a high purity grade useful in selected applications, and is supplied in white flakes which are relatively stable to color.
Specifications
Specifications and other information for OPD are easily obtained by sending us a request form (http://www.dupont.com/specintermediates/samples.html) or by contacting us (http://www.dupont.com/specintermediates/contactus.html).
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Typical Physical Properties*
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Property
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Typical Value
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CAS Registry Number
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95-54-5
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CAS Name
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1,2 benzenediamine
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Molecular Formula
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C6H4(NH2)2
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Molecular Weight
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108.1
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Amine Equivalent Weight
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54
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Bulk Density (flakes)
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33 lb/ft3
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Specific Gravity at 160°C (320°F)
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1.031
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Boiling Point (760 mmHg), °C (°F)
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252 (486)
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Freezing Point, °C (°F)
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104 (219)
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Flash Point (closed cup), °C (°F)
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156 (313)
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Solubility Parameter
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12.1
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Solubility in Water, 35°C (95°F)
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4 wt%
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Heat of Vaporization, 280°C (536°F)
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129 cal/g
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Heat of Combustion
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7,355 cal/g
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Critical Temperature (Tc), °C (°F)
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507 (945)
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Critical Volume (Vc)
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315 mL/(g mol)
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Critical Pressure (Pc)
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51.1 atm
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*These properties are drawn from various DuPont and other literature sources. DuPont does not make any warranty, express or implied, that future production will demonstrate these typical properties.
Shipping Information
The flake forms of OPD Technical and OPD Pure are available in fiber drums and 500-kg bulk bags. Molten OPD is available in tank trucks.
Contact Us
For pricing, product questions, or to place an order, please contact us (http://www.dupont.com/specintermediates/contactus.html).
