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수산화 바륨

수산화 바륨
수산화 바륨 구조식 이미지
카스 번호:
17194-00-2
한글명:
수산화 바륨
동의어(한글):
수산화바륨;수소화바륨;수산화바륨
상품명:
Barium hydroxide
동의어(영문):
Ba(OH)2;Aetzbaryt;Chebi:32592;baryta hydrate;Bariumhydroxid;BARIUM HYDRATE;BARIUM HYDROXIDE;bariumdihydroxide;Barium dihydoxide;Barium(2+) hydroxide
CBNumber:
CB5118700
분자식:
BaH2O2
포뮬러 무게:
171.34
MOL 파일:
17194-00-2.mol

수산화 바륨 속성

녹는점
>300 °C(lit.)
끓는 점
decomposes at 1032 (calculated) [KNA91]
밀도
2.2 g/mL at 25 °C(lit.)
물리적 상태
Solid
색상
Clear
수용성
Soluble in water.
감도
Air Sensitive & Hygroscopic
Merck
14,977
안정성
Stable. Incompatible with acids, carbon dioxide, moisture.
CAS 데이터베이스
17194-00-2(CAS DataBase Reference)
NIST
Barium dihydroxide(17194-00-2)
EPA
Barium hydroxide (Ba(OH)2)(17194-00-2)
안전
  • 위험 및 안전 성명
  • 위험 및 사전주의 사항 (GHS)
위험품 표기 C,Xi,Xn
위험 카페고리 넘버 36/37/38-34-20/22-36/38-41-35-22
안전지침서 26-36/37/39-45-36/37
유엔번호(UN No.) UN 3262 8/PG 2
WGK 독일 1
RTECS 번호 CQ9200000
TSCA Yes
위험 등급 8
포장분류 III
유해 물질 데이터 17194-00-2(Hazardous Substances Data)
그림문자(GHS):
신호 어: Danger
유해·위험 문구:
암호 유해·위험 문구 위험 등급 범주 신호 어 그림 문자 P- 코드
H302 삼키면 유해함 급성 독성 물질 - 경구 구분 4 경고 P264, P270, P301+P312, P330, P501
H314 피부에 심한 화상과 눈에 손상을 일으킴 피부부식성 또는 자극성물질 구분 1A, B, C 위험 P260,P264, P280, P301+P330+ P331,P303+P361+P353, P363, P304+P340,P310, P321, P305+ P351+P338, P405,P501
H318 눈에 심한 손상을 일으킴 심한 눈 손상 또는 자극성 물질 구분 1 위험 P280, P305+P351+P338, P310
H332 흡입하면 유해함 급성 독성 물질 흡입 구분 4 경고 P261, P271, P304+P340, P312
예방조치문구:
P260 분진·흄·가스·미스트·증기·...·스프레이를 흡입하지 마시오.
P280 보호장갑/보호의/보안경/안면보호구를 착용하시오.
P301+P330+P331 삼켰다면 입을 씻어내시오. 토하게 하려 하지 마시오.
P303+P361+P353 피부(또는 머리카락)에 묻으면 오염된 모든 의복은 벗거나 제거하시오 피부를 물로 씻으시오/샤워하시오.
P305+P351+P338 눈에 묻으면 몇 분간 물로 조심해서 씻으시오. 가능하면 콘택트렌즈를 제거하시오. 계속 씻으시오.
P405 밀봉하여 저장하시오.

수산화 바륨 C화학적 특성, 용도, 생산

개요

Barium Hydroxide occurs as an anhydrate whose prismatic, colorless crystals are very deliquescent. Barium hydroxide can be prepared by dissolving barium oxide (BaO) in water:
BaO+ 9H2O→Ba(OH)2·8H2O
It crystallizes as the octahydrate, which converts to the monohydrate upon heating in air. Barium oxide has been found to react with water vapor at temperatures from 1443 to 1593 K to form gaseous Ba(OH)2 according to the reaction:
BaO(solid)+H2O(gas)→Ba(OH)2(gas)
A better method of preparation involves addition of NaOH to the nitrate. Since barium hydroxide is fairly soluble, it is necessary to evaporate the solution to crystallize Ba(OH)2·8H2O. Ethanol is added to aid in this crystallization. The crystals are washed in cold ethanol to remove sodium ions and then dried.

화학적 성질

Barium hydroxide,Ba(OH)2·8H20, is a white crystalline powder, colorless solid composed of monoclinic crystals. It has a melting point of 78°C and is soluble in water and insoluble in acetone. It is used in the fusion of silicates and fat saponification.

용도

Carbon dioxide absorbant.

용도

Barium hydroxide is used in analytical chemistry to titrate weak acids, particularly organic acids. It forms clear aqueous solutions that are free from carbonate, unlike those of the alkali hydroxides, since barium carbonate is insoluble in water. This allows the use of indicators such as phenolphthalein or thymophthalein (with alkaline color changes) without the risk of titration errors due to the presence of weakly basic CO32- ions.Barium hydroxide is used in organic synthesis as a strong base, for example for the hydrolysis of esters and nitriles.It has been used to hydrolyze one of the two equivalent ester groups in dimethyl endecanedioate. It is also used in the preparation of cyclopentanone, diacetone alcohol and d-Gluonic g-lactone.
Barium hydroxide is used as an additive in thermoplastics (such as phenolic resins), rayon and PVC stabilizers to improve plastic properties. This material is used as a general-purpose additive for lubricants and greases. Other industrial applications for barium hydroxide include sugar fabrication, manufacturing soaps, fat saponification, fusing of silicates and chemical synthesis of other barium compounds and organic compounds.
Barium hydroxide is offered for sale both as the octahydrate and the monohydrate. It is available in large quantities commercially

수산화 바륨 준비 용품 및 원자재

원자재

준비 용품


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