三氯生；2,4,4'-三氯-2'-羟基二苯醚

Items

Standards

Appearance

White crystalline powder

Odor

Trace aromatic or trace phenolic

Assay (HPLC)

99.5-100.0%

Solubility in 1M NaOH

Clear or trace turbidity

Melting point

56.0-58.0℃

Ash content

≤0.1%

Heavy metals

≤10ppm

Loss on drying

≤0.1%

Organic impurities (total)

≤0.5%

4-Chlorophenol

10 ppm max

2, 4 –Dichlorophenol

10 ppm max

2, 8-Dichlorodibenzofuran

0.25ppm max

2, 8-Dichlorodibenzo-p-dioxin

0.5ppm max

2,4,8-Trichlorodibenzofuran

0.5ppm max

1, 3, 7-Trichlorodibenzo-p-dioxin

0.25ppm max

2, 3, 7, 8-Tetrachlorodibenzofuran

1.0ppt max

2, 3, 7, 8-Tetrachlorodibenzo-p-dioxin

1.0ppt max