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hch
六六六

beta-hexachlorocyclohexane (beta-hch)
甲型六氯环己烷 （α-hch）

(+) alpha-hch: 11991169-2
（+）α-hch: 11991169-2

figure1: structure of alpha-hch,
图1：甲型hch的结构，

alpha-hch, mean values, gas phase
甲型六氯环乙烷，平均值，气体阶段

alpha-hch also meets these criteria.
甲型六氯环己烷也符合这些标准。

international hch & pesticides association www.ihpa.info
国际hch及农药协会www.ihpa.info

beta-hch accounted for 93 % of hch residues.
乙型六氯环己烷占六氯环乙烷残余物的93%。

chemical name: beta-hexachlorocyclohexane (beta-hch)
化学品名称： β-六氯环己烷 （β-hch）

alpha-hch is a known tumour promoting agent.
甲型六氯环乙烷是公认的一种肿瘤增进剂。

"beta-hch is the most persistent isomer of hexachlorcyclohexane.
"β-六氯环己烷是最具持久性的六氯环己烷异构体。

beta-hch has moderate toxicity for algae, invertebrates and fish.
20. β-六氯环己烷对藻类、无脊椎动物和鱼类的毒性中等。

alpha-hexachlorocyclohexane (alpha-hch) iupac name:
国际理论和应用化学联合会（iupac）名称：

in general, hch-isomers do not absorb light > 290 nm.
一般而言，六氯环己烷异构体不吸收波长大于290纳米的光。

1. tenth hch and related pesticides forum, international conference, brno, czech republic
1. 捷克共和国布尔诺，国际会议第十届六氯环己烷及相关农药论坛

∑hchs, mostly alpha-hch, highest annual average value reported in 1996
∑-六氯环己烷，主要是甲型六氯环乙烷，1996年报告的最高年均值

table 1.2: physico-chemical properties1 beta-hch alpha-hch
1.2：物理化学性质1

alpha-hch causes liver hyperplasia and liver tumours in (laboratory) rodents.
甲型六氯环乙烷可导致（实验室）啮齿动物出现肝肿大和肝肿瘤。

health and safety guide no. 54 lindane (gamma-hch) health and safety guide.
健康和安全指南54号：林丹（-hch）健康和安全指南。

racemic: 319-84-6, (+) alpha-hch: 11991169-2, (-) alpha-hch: 119911-70-5
外消旋：319-84-6，（+）甲型hch：11991169-2，（-）甲型hch：119911-70-5