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황화아연

황화아연
황화아연 구조식 이미지
카스 번호:
1314-98-3
한글명:
황화아연
동의어(한글):
황화아연;황화아연;징크설파이드;설판일리덴아연;섬아연광;일황화 아연;황화 아연;황화 아연 (ZnS);황화 아연(II)
상품명:
Zinc sulfide
동의어(영문):
irtran2;albalith;cleartran;Zinksulfid;SPHALERITE;sachtolith;zincblende;CIROM(TM)-2;Zinc sulfid;ZINK SULFIDE
CBNumber:
CB0733609
분자식:
SZn
포뮬러 무게:
97.46
MOL 파일:
1314-98-3.mol

황화아연 속성

녹는점
1700°C
끓는 점
1185°C (estimate)
밀도
4.1 g/mL at 25 °C (lit.)
물리적 상태
powder
Specific Gravity
4.1
색상
white to faint yellow
수용성
Soluble in acids. insoluble in water.
Merck
14,10160
Solubility Product Constant (Ksp)
pKsp: α-ZnS 23.80;β-ZnS 21.60
안정성
Stable. May react with water to give toxic hydrogen sulfide. Incompatible with acids, strong oxidizing agents. Air and moisture sensitive.
InChIKey
WGPCGCOKHWGKJJ-UHFFFAOYSA-N
CAS 데이터베이스
1314-98-3(CAS DataBase Reference)
EPA
Zinc sulfide (1314-98-3)
안전
  • 위험 및 안전 성명
위험 카페고리 넘버 31
안전지침서 50A
WGK 독일 3
RTECS 번호 ZH5400000
TSCA Yes
HS 번호 28309085
유해 물질 데이터 1314-98-3(Hazardous Substances Data)
기존화학 물질 KE-35583
그림문자(GHS):
신호 어:
유해·위험 문구:
암호 유해·위험 문구 위험 등급 범주 신호 어 그림 문자 P- 코드
예방조치문구:
NFPA 704
0
1 0

황화아연 C화학적 특성, 용도, 생산

화학적 성질

Yellowish-white powder. ZnS exists in two crystalline forms, α (wurtzite) and β (sphalerite). Stable if kept dry. α: d 3.98. β: d 4.102, changes to α form at 1020C. Sublimes at 1180C. Soluble in acids; insoluble in water.

용도

Pigment for paints, oilcloths, linoleum, leather, dental rubber, etc., especially in the form of lithopone; mixed with ZnO as "mineral white." Anhydrous zinc sulfide is used in x-ray screens and with a trace of a radium or mesothorium salt in luminous dials of watches; also television screens.

용도

Zinc sulfide (ZnS) is used as a pigment and to make white glass, rubber, and plastics. It is an ingredient in pesticides, luminous paints, and X-ray and television screens.

생산 방법

Production is similar to that of lithopone. A Na2S solution is mixed with a zinc salt solution under precisely controlled conditions. The resulting zinc sulfide precipitate is calcined and processed to give the finished product. Na2S + ZnSO4 →ZnS + Na2SO4.

정의

zinc sulphide: A yellow-whitewater-soluble solid, ZnS. It occursnaturally as sphalerite (see also zincblende) and wurtzite. The compoundsublimes at 1180°C. It is used as apigment and phosphor.

일반 설명

A yellowish-white powder in a liquid. Insoluble in water and denser than water. Primary hazard is to the environment. Immediate steps should be taken to limit spread to the environment. Easily penetrates the soil to contaminate groundwater and nearby waterways.

공기와 물의 반응

Insoluble in water.

반응 프로필

These sulfides are rather inert, dissolve into acid, insoluble in water and alkalis.

건강위험

Inhalation of material may be harmful. Contact may cause burns to skin and eyes. Inhalation of Asbestos dust may have a damaging effect on the lungs. Fire may produce irritating, corrosive and/or toxic gases. Some liquids produce vapors that may cause dizziness or suffocation. Runoff from fire control may cause pollution.

화재위험

Some may burn but none ignite readily. Containers may explode when heated. Some may be transported hot.

공업 용도

Zinc sulfide(Sachtolith) is mainly used in plastics. Functional properties such as lightening and hiding power are criteria for the use of Sachtolith. It has proved to be very useful for coloring many thermoplasts. During the dispersion process it does not cause abrasion of metallic production machinery or adversely effect the polymer, even at high operating temperatures or during multistage processing. Even ultrahigh molecular mass thermoplasts can be colored without problems. In glass-fiber-reinforced plastics, the soft texture of Sachtolith prevents mechanical fiber damage during extrusion. Sachtolith is also used as a dry lubricant during the fabrication of these materials.
The low abrasiveness of Sachtolith prolongs the operating life of stamping tools used in the manufacture of industrial rubber articles. The lightfastness and ageing resistance of many elastomers are improved by using Sachtolith. It is also used as a dry lubricant for roller and plain bearings, and as a white pigment for greases and oils.

Toxicology

The use of zinc sulfide and barium sulfate in contact with foods is permitted by the FDA (United States) and in most European countries. Some restrictions apply in France, Italy, the United Kingdom, and Czechoslovakia.
Soluble zinc is toxic in large amounts, but the human body requires small quantities (10–15 mg d−1) for metabolism. Zinc sulfide is harmless in the human due to its low solubility. The acid concentration in the stomach and the rate of dissolution following ingestion are not sufficient to produce physiologically significant quantities of soluble zinc. LD50 values in the rat exceed 15 g kg−1. No cases of poisoning or chronic damage to health have been observed in the manufacture of zinc sulfide pigments.

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