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金属铬
金属铬
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英文名称
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chromium
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CAS号
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7440-47-3
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分子量
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52.01
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中文别名
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金属铬
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英文别名
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chromium
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属性
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溶解度
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reacts with dilute acid solutions
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形态
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powder
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颜色
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Silver-gray
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比重
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7.2
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气味 (Odor)
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Odorless
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PH值
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<1 (H2O, 20°C)
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电阻率 (resistivity)
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12.7 μΩ-cm, 20°C
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水溶解性
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Insoluble in water.
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Merck
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13,2252
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暴露限值
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TLV-TWA: chromium metal 0.5 mg/m3
(ACGIH and MSHA), 1 mg/m3 (OSHA);
Cr(II) and Cr(III) compounds 0.5 mg/m3
(ACGIH); Cr(VI) compounds, water soluble
and certain water insoluble, 0.05 mg/m3
(ACGIH).
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(IARC)致癌物分类
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3 (Vol. Sup 7, 49) 1990
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NIST化学物质信息
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EPA化学物质信息
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安全
危险品标志
危险品运输编号
UN 2924 3/PG 2
自燃温度
580°C
TSCA
Yes
海关编码
8112 21 90
毒性
Elemental chromium and certain chromium compounds
have been designated as carcinogens, hazardous substances,
hazardous waste constituents, and priority toxic
pollutants. Some of those compounds designated as hazardous
are chromic acetate, chromic acid, chromic sulfate, and chromous
chloride. Although chromium in
the 6+ state is regarded as being the most carcinogenic, there
are 6+ compounds that appear to be non-carcinogenic. In addition
to their possible carcinogenicity, chromium compounds
may have local allergic effects leading to dermatitis.
Systemically, 6+ chromium compounds are irritants to the
respiratory system and may give rise to pulmonary edema.
立即威胁生命和健康浓度
250 mg Cr/m3
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联系电话:
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400-666-7788;86-10-82849933
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公司网址:
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联系电话:
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18616739031
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联系电话:
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18521732826
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联系电话:
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18621169109
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联系电话:
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800-8193336
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联系电话:
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021-58432009
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联系电话:
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18019345275
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联系电话:
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18548936886;010-62340519
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