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【Huayuan wollastonite】Does wollastonite powder contain he
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  • 作者:admin
  • 发布时间:2020-03-27 11:42
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Do not contain
The original meaning of heavy metal refers to metal with specific gravity greater than 5 (generally speaking, metal with density greater than 4.5g / cm3), including gold, silver, copper, iron, lead, etc
Wollastonite powder
Molecular formula: Ca3 (si3o9)
Hardness: 4.5-5.0
Relative density: 2.78-2.91
Among them, only calcium (CA) is metal, while calcium
The density is
Not heavy metal