Adipic acid
Specification
Adipic acid is the organic compound with the formula (CH2)4(COOH)2. From the industrial perspective, it is the most important dicarboxylic acid: About 2.5 billion kilograms of this white crystalline powder are produced annually, tmainly as a precursor for he production of nylon . Adipic acid otherwise rarely occurs in nature.
Specification
Adipic acid is the organic compound with the formula (CH2)4(COOH)2. From the industrial perspective, it is the most important dicarboxylic acid: About 2.5 billion kilograms of this white crystalline powder are produced annually, tmainly as a precursor for he production of nylon . Adipic acid otherwise rarely occurs in nature.
Uses:
By far the majority of the 2.5 billion kg of adipic acid produced annually is used as monomer for the production of nylon by a polycondensation reaction with hexamethylene diamine forming 6,6-nylon.Other major applications also involve polymers: it is a monomer for production of Polyrethane and its esters are plasticizers , especially in pvc.
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Items
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Guarantee
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Test result
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Test method
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Appearance
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White powder
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White powder
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Content %(m/m)
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≥99.7
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99.84
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SH/T1499.1-1997
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Melting point
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≥151.5
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152.9
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GB/T 617-88
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moisture %(m/m)
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≤0.20
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0.16
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GB/T 6283-88
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Ash, mg/kg
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≤7
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2
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SH/T1499.4-1997
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Ammonia solution colour(in pt-co scale)
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≤5
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1
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SH/T1499.3-1997
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Fe Content, mg/kg
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≤1.0
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0.2
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SH/T1499.5-1997
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Nitrcacidcontent,mg/kg
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≤10
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1.3
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SH/T1499.7-1997
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Content of oxidizable compounds as oxalic acid,
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≤60
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17
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SH/T1499.8-1997
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Melt colour(in pt-co scale)
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≤50
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10
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SH/T1499.9-1997
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