Europium(III) chloride hexahydrate

그림문자(GHS)

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• 신호 어

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• 유해·위험 문구

  H315：피부에 자극을 일으킴

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• 예방조치문구

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  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.

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

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Europium(III) chloride hexahydrate 화학적 특성, 용도, 생산

• 화학적 성질

  Europium chloride, also called europium(III) chloride or EuCl3, is a white or yellow solid that belongs to the rare earth metal group. It can decompose into europium(II) chloride (EuCl2) at or below its melting point. Europium chloride displays high water absorption and solubility in water, while the anhydrous form readily dissolves in ethanol. Exposure to humid air causes the anhydrate to absorb water and convert into a white crystalline hexahydrate (EuCl3.6H2O).

• 용도

  Europium(III) chloride hexahydrate may be used as a precursor to Eu for the synthesis of lanthanide containing polystyrene beads, which may be used as calibration and internal standards for mass cytometry.

• 제조 방법

  Treating Eu2O3 with aqueous HCl produces hydrated europium chloride (EuCl3·6H2O). This salt cannot be rendered anhydrous by heating. Instead one obtains an oxychloride. Anhydrous EuCl3 is often prepared by the "ammonium chloride route," starting from either Eu2O3 or hydrated europium chloride (EuCl3·6H2O) by heating carefully to 230 °C. These methods produce (NH4)2[EuCl5]:
  10 NH4Cl + Eu2O3 → 2 (NH4)2[EuCl5] + 6 NH3 + 3 H2O
  EuCl3·6H2O + 2 NH4Cl → (NH4)2[EuCl5] + 6 H2O
  The pentachloride decomposes thermally according to the following equation:
  (NH4)2[EuCl5] → 2 NH4Cl + EuCl3
  The thermolysis reaction proceeds via the intermediary of (NH4)[Eu2Cl7].
  wikipedia

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