CALCIUM PHOSPHITE

그림문자(GHS)

• 그림문자(GHS)

  

• 신호 어

  Warning

• 유해·위험 문구

  H315：피부에 자극을 일으킴

  H319：눈에 심한 자극을 일으킴

• 예방조치문구

  P264：취급 후에는 손을 철저히 씻으시오.

  P264：취급 후에는 손을 철저히 씻으시오.

  P280：보호장갑/보호의/보안경/안면보호구를 착용하시오.

  P302+P352：피부에 묻으면 다량의 물로 씻으시오.

  P305+P351+P338：눈에 묻으면 몇 분간 물로 조심해서 씻으시오. 가능하면 콘택트렌즈를 제거하시오. 계속 씻으시오.

  P321：(…) 처치를 하시오.

  P332+P313：피부 자극이 생기면 의학적인 조치· 조언을 구하시오.

  P362：오염된 의복을 벗고 세척 후에 재사용하기

CALCIUM PHOSPHITE 화학적 특성, 용도, 생산

• 개요

  Calcium phosphite can have the molecular formula of CaHPO3 or Ca(H2PO3)2. It is the former that appears when a solution of phosphorous acid is reacted with the oxide, hydroxide or carbonate:
  CaO +H3PO3 ? CaHPO3·H2O +H2O
  The product is a monohydrate. It can also be prepared by the action of ammonium phosphite on calcium chloride:
  CaCl2 (aq) +NH4HPO3 (aq) ? CaHPO3·H2O +NH4Cl2 (aq)
  A white, crystalline powder is obtained. The solubility of CaHPO3·H2O has apparently not been determined exactly. If heated to about 250°C, the anhydrate results. This is stable when heated further up to about 320°C where it decomposes to form phosphine and hydrogen:
  3CaHPO3 + heat ? 2PH3 + 3Ca(PO3)2 +H2

• 화학적 성질

  crystal(s); used in fertilizers and polymerization catalysts [MER06]

• 물리적 성질

  Calcium Phosphite is a colorless, monoclinic crystal which loses water at about 150°C and is slightly soluble in water but insoluble in alcohol. The anhydrate, calcium phosphite (CaHPO3), is stable in air even when heated at 95°C for 2 months.

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