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                  Tetrachlorophthalic anhydride

                  【English name】:Tetrachlorophthalic Anhydride
                  【English initial】:TCPA
                  【Chinese name】:Tetrachlorophthalic anhydride
                  【Chinese alias】:Tetrachlorophthalic anhydride
                  【CAS】:117-08-8
                  【Molecular formula】:C8Cl4O3
                  【Relative molecular weight】:285.9
                  【Product quality】
                  Tetrachlorophthalic anhydride
                  Item

                  Index

                  Fine product

                  Superior grade

                  First grade

                  Second grade

                  Qualified product

                  Appearance

                  White crystal or powder

                  Purity/%≥

                  Gas phase chromatography

                  99.0

                  99.0

                  99.0

                  Liquid phase chromatography

                  98.5

                  99.0

                  Melting point/℃≥

                  256.0

                  255.5~258.0

                  256.0~258.0

                  255.5~258.0

                  255.5~258.0

                  Drying loss/%≤

                  0.50

                  0.50

                  0.50

                  0.50

                  Solubility in xylene/%

                  100

                  100

                  100

                  Chroma≤

                  in Xylene

                  50

                  150

                  in Methanol

                  150

                  In ethanol

                  10

                  Free acid/%≤

                  0.50

                  0.50

                  0.50

                  0.50

                  Free chlorine/%≤

                  0.001
                  (10ppm)

                  0.001
                  (10ppm)

                  0.001
                  (10ppm)

                  0.001
                  (10ppm)

                  Iron content/ppm≤

                  30

                  10

                  10

                  10

                  Alkali insoluble/%≤

                  0.50

                  Hexachlorobenzene/%≤

                  0.015
                  (150ppm)

                  0.100
                  (1000ppm)

                  0.100
                  (1000ppm)

                  0.100
                  (1000ppm)

                  Sulfate /%≤

                  0.010
                  (100ppm)

                  Tetrachloride phthalic acid
                  /%≤

                  0.7

                  Water/%≤

                  0.04

                  【Packing】:Lining plastic woven bag, nwt 25kg.
                  【Use】:For medicine, painws, dyes, flame retardants and so on.

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