新疆十一选五结果
Shaoxing Huawei Chemical Co.,Ltd.
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· Triphenylphosphine
· Tetrachlorophthalic Anhydride
· p-Cresol
· Sodium sulfite
· Sulfuric acid
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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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