셀레나이드 스트론튬

그림문자(GHS)

• 그림문자(GHS)

  

• 유해·위험 문구

  H301：삼키면 유독함

  H331：흡입하면 유독함

  H373：장기간 또는 반복 노출되면 장기(또는, 영향을 받은 알려진 모든 장기를 명시)에 손상을 일으킬 수 있음

  H400：수생생물에 매우 유독함

  H410：장기적 영향에 의해 수생생물에 매우 유독함

• 예방조치문구

  P260：분진·흄·가스·미스트·증기·...·스프레이를 흡입하지 마시오.

  P304+P340：흡입하면 신선한 공기가 있는 곳으로 옮기고 호흡하기 쉬운 자세로 안정을 취하시오.

  P405：밀봉하여 저장하시오.

셀레나이드 스트론튬 화학적 특성, 용도, 생산

• 개요

  Strontium selenide has the molecular formula of SrSe and the molecular weight of 166.5852 g/mol. It is a white cubic crystal whose CAS number is 1315-07-7. Its melting point is 1605°C and its density is 4.54 g/cm³. It reacts with water and so cannot be prepared by an aqueous precipitation method. It can be prepared by the reaction of the oxide with Se metal:
  2SrO+ Se+ Heat ? SrSe+ SeO2
  It can also be prepared by reducing the selenate with hydrogen gas:
  SrSeO4 + 4H2 + heat ? SrSe+ 4H2O
  Strontium selenide and barium selenide both have a simple cubic structure, with cube edges equal to 3.117? and 3.308 ?, respectively. In the case of SrSe, the ions at the corners are Sr⁺⁺ and Se^--。

• 화학적 성질

  white cub; -20 mesh with 99.5% purity [CER91] [CRC10]

• 물리적 성질

  Phosphors can be categorized in accordance with their behavior as fluorescent, phosphorescent or stimulable. As used in this disclosure, such categories should be understood as based upon the predominant behavior of the phosphor at about room temperature, i.e at about 20°C.
  ? A “stimulable” phosphor is one that, at room temperature, stores energy absorbed upon exposure to excitation by electromagnetic radiation and releases the predominant portion of the stored energy upon exposure to stimulating electromagnetic radiation.
  ? A phosphorescent phosphor at room temperature will store absorbed energy for an appreciable time but will release the predominant portion of the stored energy spontaneously.
  ? A fluorescent phosphor will release the predominant portion of the absorbed energy as emission radiant energy substantially simultaneously with exposure to the exciting radiant energy.

• 용도

  The major usage of SrSe has been as an infrared stimulable phosphor. Photoluminescent materials useful for detection of infrared light are prepared using a base material, such as SrSe. Up to three dopants, Sm3+, cerium, Ce³⁺ and Eu²⁺ compounds are used for the purpose of providing electron traps. The base material can be a combination of alkaline earth metal selenides such as strontium selenide, calcium selenide, or a mixture of these. Luminescence is a long known phenomenon of nature reaching back very far in history. Recorded observations reach back to the last century. Seeback and Becquerel observed momentary visible afterglow in certain materials.

• Synthesis

  Pure SrSe is best obtainedfrom the selenite by high-temperature reduction with NH3.
  SrSeO3 + 2NH3 = SrSe + 3 H2O + N2

셀레나이드 스트론튬 공급 업체

Global(46)Suppliers

셀레나이드 스트론튬 관련 검색