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铬酸钙

铬酸钙
IUPAC名
Calcium dioxido-dioxo-chromium
别名 Calcium Chrome Yellow
C. I. Pigment Yellow 33
Gelbin
Yellow Ultramarine
识别
CAS号 13765-19-0  checkY
PubChem 26264
ChemSpider 24471
SMILES
 
  • [Ca+2].[O-][Cr]([O-])(=O)=O
InChI
 
  • 1/Ca.Cr.4O/q+2;;;;2*-1/rCa.CrO4/c;2-1(3,4)5/q+2;-2
InChIKey RFAFBXGYHBOUMV-DETYUTSMAY
EINECS 237-66-8
RTECS GB2750000
性质
化学式 CaCrO4
摩尔质量 156.072 g/mol g·mol⁻¹
外观 亮黄色粉末
密度 3.12 g/cm3
熔点 2710 °C(2983 K)
溶解性 anhydrous
4.5 g/100 mL (0 °C)
2.25 g/100 mL (20 °C)
dihydrate
16.3 g/100mL (20 °C)
18.2 g/100mL (40 °C)
溶解性 溶于酸
部分溶于乙醇
结构
晶体结构 单斜晶系
相关物质
其他阴离子 重铬酸钙
其他阳离子 铬酸铍
铬酸镁
铬酸锶
铬酸钡
铬酸镭
危险性
主要危害 highly toxic, carcinogen, mutagen
NFPA 704
0
3
1
 
若非注明,所有数据均出自标准状态(25 ℃,100 kPa)下。

铬酸钙CaCrO4 )是亮黄色固体,通常以二水合物形式存在,但作为色素的非常罕见的天然(矿物)形式是无水的。[1]有较大毒性。

性质

[编辑]

铬酸钙的水合物在200 ℃时失水。与有机物质或还原剂反应产生三价。固体会与发生爆炸性反应。如果与混合并点燃,可发生剧烈燃烧。[2]

用途

[编辑]

可用作颜料、缓蚀剂、电镀、光化学处理和工业废物处理英语Waste treatment

参考文献

[编辑]
  1. ^ 存档副本. [2020-09-20]. (原始内容存档于2001-03-02). 
  2. ^ Occupational Safety And Health Guideline For Calcium Chromate 互联网档案馆存檔,存档日期August 8, 2007,.
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铬酸钙
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