카드뮴황

그림문자(GHS)

• 그림문자(GHS)

  

• 신호 어

  Danger

• 유해·위험 문구

  H302：삼키면 유해함

  H341：유전적인 결함을 일으킬 것으로 의심됨 (노출되어도 생식세포 유전독성을 일으키지 않는다는 결정적인 증거가 있는 노출경로가 있다면 노출경로 기재)

  H350：암을 일으킬 수 있음 (노출되어도 암을 일으키지 않는다는 결정적인 증거가 있는 노출경로가 있다면 노출경로 기재)

  H372：장기간 또는 반복 노출되면 장기(또는, 영향을 받은 알려진 모든 장기를 명시)에 손상을 일으킴

  H410：장기적 영향에 의해 수생생물에 매우 유독함

• 예방조치문구

  P201：사용 전 취급 설명서를 확보하시오.

  P202：모든 안전 조치 문구를 읽고 이해하기 전에는 취급하지 마시오.

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

  P273：환경으로 배출하지 마시오.

  P301+P312：삼켜서 불편함을 느끼면 의료기관(의사)의 진찰을 받으시오.

  P308+P313：노출 또는 접촉이 우려되면 의학적인 조치· 조언를 구하시오.

카드뮴황 화학적 특성, 용도, 생산

• 화학적 성질

  Cadmium sulfide is an odorless, crystalline, lemon yellow to orange solid.

• 물리적 성질

  Yellow to orange crystal; occurs as two polymorphs, hexagonal alpha form and cubic beta form; exhibits stable wurtzite structure at lower temperature, and zinc blende type structure at higher temperatures; the beta form converts to alpha form when heated at 750°C in sulfur atmosphere; sublimes at 980°C; practically insoluble in water (1.3 mg/L at 20°C); Ksp 3.6x10-29; dissolves in dilute mineral acids on heating or concentrated acids at ordinary temperatures (decomposes with liberation of H₂S).

• 출처

  Cadmium sulfide occurs in nature as the mineral greenoktite. The compound is widely used in pigments for paints, baking enamels, ceramics and plastics. It imparts bright yellow to maroon, with strong retention of color and resistance to alkalis. It also is used in inks, phosphors, and fluorescent screens. Other applications of this compound are in photovoltaic and solar cells (for converting solar energy to electrical energy), photoconductors (in xerography), thin film transistors and diodes, rectifiers, scintillation counters, pyrotechnics, and smoke detectors.

• 용도

  cadmium sulfide is used as a colorant for paints and rubber; cadmium acetate is used in the production of craftware.

• 생산 방법

  Cadmium sulfide may be prepared by the reaction between hydrogen sulfide and cadmiumvapor at 800 Cor by heating a mixture of cadmium or cadmium oxide with sulfur.

• 정의

  A native cadmium sulfide containing 77.7% cadmium. Ore of cadmium

• 제조 방법

  Cadmium sulfide may be prepared by precipitation from an aqueous solution of its soluble salts such as cadmium chloride or cadmium nitrate by passing hydrogen sulfide. The reactions may be carried out in acidic, neutral or alkaline solutions using various cadmium salts to obtain different crystal modifications as shown in the table below.
  
  Cadmium sulfide also may be obtained by treatment of sodium or other alkali metal sulfide solution with that of a soluble cadmium salt. The compound also may be prepared by heating a mixture of cadmium or its oxide with sulfur at 800°C; or by the reaction of H₂S with cadmium vapor at 800°C.

• 일반 설명

  Natural occurrence: hawleyite (structural type of sphalerite) and greenockite (structural type of wurtzite)

• 위험도

  A confirmed carcinogen, highly toxic. See cadmium.

• Safety Profile

  Confirmed human carcinogen with experimental carcinogenic and tumorigenic data. Moderately toxic by ingestion and inhalation. Human mutation data reported. When heated to decomposition it emits very toxic fumes of Cd and SOx. See also CADMIUM COMPOUNDS and SULFIDES

• 잠재적 노출

  Used in pigments; as an active ingredient in dandruff shampoos; making photoconductors, solar cells, and other electronic components.

• 운송 방법

  UN2570 Cadmium compounds, Hazard Class: 6.1; Labels: 6.1-Poisonous materials, Technical Name Required.

• Structure and conformation

  Cadmium sulfide takes two types of structure, zinc blend and wurtzite structures.
  Cubic system that has a zinc-blend structure, with a lattice constant of a=0.582 nm and Cd– S=0.252 nm.
  Hexagonal system that has a wurtzite structure with lattice constants of a=0.4136 nm, c=0.6713 nm and c/a=1.624, Cd–S=0.252 nm.

• 비 호환성

  Contact with water or moisture releases poisonous hydrogen sulfide gas. Incompatible with oxidizers (chlorates, nitrates, peroxides, permanganates, perchlorates, chlorine, bromine, fluorine, etc.); contact may cause

• 폐기물 처리

  Use a licensed professional waste disposal service to dispose of this material. All federal, state, and local environmental regulations must be observed. Consult with environmental regulatory agencies for guidance on acceptable disposal practices. Generators of waste containing this contaminant (≥100 kg/mo) must conform to EPA regulations governing storage, transportation, treatment, and waste disposa

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