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불가화 바륨

불가화 바륨
불가화 바륨 구조식 이미지
카스 번호:
7787-32-8
한글명:
불가화 바륨
동의어(한글):
불가화바륨;불화바륨;불화바륨
상품명:
Barium fluoride
동의어(영문):
BariumFlouride;baryumfluorure;BARIUM FLUORIDE;bariumdifluoride;Barium fluoride 99;Barium fluoride 99%;bariumfluoride(baf2);BARIUM (II) FLUORIDE;Barium fluoride≥99.9%;BARIUM FLUORIDE, 99.99%
CBNumber:
CB6173780
분자식:
BaF2
포뮬러 무게:
175.32
MOL 파일:
7787-32-8.mol

불가화 바륨 속성

녹는점
1354 °C
끓는 점
2260 °C(lit.)
밀도
4.89 g/mL at 25 °C(lit.)
굴절률
1.4741
인화점
2260°C
저장 조건
Store at +5°C to +30°C.
용해도
1.2g/l
물리적 상태
random crystals
색상
White
Specific Gravity
4.89
수용성
1.6 g/L (20 ºC)
감도
Hygroscopic
Merck
14,974
Solubility Product Constant (Ksp)
pKsp: 6.74
안정성
Stable. Incompatible with acids.
CAS 데이터베이스
7787-32-8(CAS DataBase Reference)
NIST
Barium fluoride(7787-32-8)
안전
  • 위험 및 안전 성명
  • 위험 및 사전주의 사항 (GHS)
위험품 표기 Xn,T
위험 카페고리 넘버 20/22
안전지침서 28-28A
유엔번호(UN No.) UN 2811 6.1/PG 3
WGK 독일 1
RTECS 번호 CQ9100000
위험 참고 사항 Toxic
TSCA Yes
위험 등급 6.1
포장분류 III
HS 번호 28261990
독성 LD50 orally in Rabbit: 250 mg/kg
그림문자(GHS):
신호 어: Danger
유해·위험 문구:
암호 유해·위험 문구 위험 등급 범주 신호 어 그림 문자 P- 코드
H301 삼키면 유독함 급성 독성 물질 - 경구 구분 3 위험 P264, P270, P301+P310, P321, P330,P405, P501
H302 삼키면 유해함 급성 독성 물질 - 경구 구분 4 경고 P264, P270, P301+P312, P330, P501
H332 흡입하면 유해함 급성 독성 물질 흡입 구분 4 경고 P261, P271, P304+P340, P312
예방조치문구:
P261 분진·흄·가스·미스트·증기·...·스프레이의 흡입을 피하시오.
P264 취급 후에는 손을 철저히 씻으시오.
P264 취급 후에는 손을 철저히 씻으시오.
P270 이 제품을 사용할 때에는 먹거나, 마시거나 흡연하지 마시오.
P304+P340 흡입하면 신선한 공기가 있는 곳으로 옮기고 호흡하기 쉬운 자세로 안정을 취하시오.

불가화 바륨 C화학적 특성, 용도, 생산

개요

Barium fluoride appears as colourless, odourless crystals/white powder and is slightly soluble in water but soluble in ethanol and methanol. When heated, barium fluoride decomposes and emits toxic fumes of fluorine and barium. Barium fluoride is used as a preopacifying agent and in enamel and glazing frits production. Its other use is in the production of welding agents (an additive to some fluxes, a component of coatings for welding rods and in welding powders). It is also used in metallurgy as a molten bath for refining aluminium.

화학적 성질

White Fine Powder

물리적 성질

Barium fluoride (BaF2), also known as barium(II) fluoride, is a solid which can also be a transparent crystal. Its molecular weight is 175.34 g/mol. It occurs in nature as the mineral “Frankdicksonite”. It occurs as a white powder with a melting point of 1290 and a boiling point of 2259°C. It is slightly soluble in water (0.159 at 0.0°C and 0.162 g/100 ml of water at 20°C). The solid generally assumes the fluorite structure, but when subjected to high pressure, changes to the PbCl2 structure. In the vapor phase, the BaF2 molecule is nonlinear with an F–Ba–F angle of approximately 108°C.

용도

As a flux and opacifier in vitreous enamels; in the manufacture of carbon brushes for DC motors and generators; in heat-treating metals; in embalming; in glass manufacture.

Safety Profile

A poison by ingestion and intraperitoneal routes. Moderately toxic by subcutaneous route. An experimental teratogen. See also FLUORIDES and BARIUM COMPOUNDS (soluble). When heated to decomposition it emits toxic fumes of F-.

Purification Methods

Wash it well with distilled H2O and dry it in a vacuum. Its solubility in H2O is 1.6g (10o), 1.6g (20o) and 1.62g (30o) per L, and is soluble in mineral acids and aqueous NH4Cl. It may be stored in glass bottles. [Kwasnik in Handbook of Preparative Inorganic Chemistry (Ed. Brauer) Academic Press Vol I p 234 1963.]

불가화 바륨 준비 용품 및 원자재

원자재

준비 용품


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