수산화 바륨
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수산화 바륨 속성
- 녹는점
- >300 °C(lit.)
- 끓는 점
- decomposes at 1032 (calculated) [KNA91]
- 밀도
- 2.2 g/mL at 25 °C(lit.)
- 용해도
- 산성 수용액(약간), 물(약간) 에 용해됨
- 물리적 상태
- 고체
- 물리적 상태
- 단단한 모양
- 색상
- 투명한
- 수소이온지수(pH)
- 11.27(1 mM solution);12.22(10 mM solution);13.08(100 mM solution)
- 냄새
- 냄새 없음
- 수용성
- 물에 용해됩니다.
- 감도
- Air Sensitive & Hygroscopic
- Merck
- 14,977
- 노출 한도
- ACGIH: TWA 0.5 mg/m3
NIOSH: IDLH 50 mg/m3; TWA 0.5 mg/m3
- 안정성
- 안정적인. 산, 이산화탄소, 습기와 호환되지 않습니다.
- InChIKey
- RQPZNWPYLFFXCP-UHFFFAOYSA-L
- CAS 데이터베이스
- 17194-00-2(CAS DataBase Reference)
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 | ||
| HS 번호 | 2805191000 | ||
| 유해 물질 데이터 | 17194-00-2(Hazardous Substances Data) | ||
| 독성 | LD50 ipr-mus: 255 mg/kg GTPZAB 28(6),45,84 | ||
| 기존화학 물질 | KE-02060 |
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.물리적 성질
Monohydrate, Ba(OH)2?H2O is a white powder; density 3.743 g/cm3; slightly soluble in water; soluble in dilute mineral acids. Octahydrate, Ba(OH)2?8H2O is a colorless monoclinic crystal; density 2.18 g/cm3 at 16°C; refractive index 1.50; melts at 78°C; vapor pressure 227 torr; loses seven molecules of water of crystallization when its solution is boiled in the absence of atmospheric CO2 forming solid monohydrate; further heating produces anhydrous Ba(OH)2 melting at 407°C; readily dissolves in water (3.76 g/100 g at 20°C and 11.7 g/100 g at 50°C); aqueous solution highly alkaline; also soluble in methanol; slightly soluble in ethanol; insoluble in acetone.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.
제조 방법
Barium hydroxide is made by dissolving barium oxide in hot water. The octahydrate, Ba(OH)2?8H2O, crystallizes upon cooling. It also is prepared by precipitation with caustic soda from an aqueous solution of barium sulfide:BaS + 2NaOH → Ba(OH)2 + Na2S.
위험도
An acute poison; toxic symptoms are similar to other soluble salts of barium (see Barium).Safety Profile
A poison by ingestion andintraperitoneal routes. Incompatible with chlorinated rubber.수산화 바륨 준비 용품 및 원자재
원자재
준비 용품
이노시톨
Heat stabilizer for PVC
BARIUM NITRITE
5-METHOXY-DL-TRYPTOPHAN
(R)-2-Amino-3-mercapto-3-methylbutanoic acid
1-헥센
3,3-사메틸렌 글루타릭 산
1,3-dihydroxy-2-naphthoic acid
디노닐나프탈렌 술폰산 바륨
메탄술폰산
싸이오사이안산 나트륨
인산
아세틸콜린아이오다이드
과염소산
SPIRO[4.5]DECANE-7,9-DIONE
글루코노텔타락톤
크롬산바륨
바륨 옥사레이트
2-methylquinolin-3-ol
과염소산나트륨
글리신
사이클로펜타놀
다이메틸 인산염
2-클로로벤조익산
티오글리콜산
Carboplatin
브롬화수소
메틸이소부틸카비놀
과산화바륨
과염소산칼륨
DL-GLYCERALDEHYDE
COPPER (II) GLUCONATE, MIN. 98
사이클로펜타논
이소프로필아민
L-(+)-아르기닌
과염소산암모늄
2-Methylsuccinic acid
수산화 바륨 공급 업체
글로벌( 319)공급 업체
| 공급자 | 전화 | 이메일 | 국가 | 제품 수 | 이점 |
|---|---|---|---|---|---|
| Hebei Mojin Biotechnology Co., Ltd | +8613288715578 |
sales@hbmojin.com | China | 12456 | 58 |
| Henan Tianfu Chemical Co.,Ltd. | +86-0371-55170693 +86-19937530512 |
info@tianfuchem.com | China | 21691 | 55 |
| Hubei Jusheng Technology Co.,Ltd. | 18871490254 |
linda@hubeijusheng.com | CHINA | 28180 | 58 |
| Hubei xin bonus chemical co. LTD | 86-13657291602 |
linda@hubeijusheng.com | CHINA | 22968 | 58 |
| Chongqing Chemdad Co., Ltd | +86-023-61398051 +8613650506873 |
sales@chemdad.com | China | 39916 | 58 |
| Shenyang Simchoice Chemical Co.,Ltd | +86-024-23769576 +86-15040101888 |
sales@simchoicechem.com | China | 255 | 58 |
| CONIER CHEM AND PHARMA LIMITED | +8618523575427 |
sales@conier.com | China | 47465 | 58 |
| career henan chemical co | +86-0371-86658258 15093356674; |
factory@coreychem.com | China | 29826 | 58 |
| Hebei Yanxi Chemical Co., Ltd. | +8617531190177 |
peter@yan-xi.com | China | 5993 | 58 |
| Hubei Ipure Biology Co., Ltd | +8613367258412 |
ada@ipurechemical.com | China | 10326 | 58 |