브롬화은
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브롬화은 속성
- 녹는점
- 432 °C (lit.)
- 끓는 점
- 700 °C
- 밀도
- 6.473 g/mL at 25 °C (lit.)
- 저장 조건
- Room Temperature
- 용해도
- insoluble in H2O, acid solutions, ethanol
- 물리적 상태
- 가루
- Specific Gravity
- 6.473
- 색상
- 옅은 노랑
- 수용성
- 알칼리 시안화물 용액에 용해됩니다. 암모니아에 부분적으로 용해됩니다. 알코올과 산에 불용성. 물에 거의 녹지 않습니다.
- 비열
- Cp(crystal): 0.28 J/(g·K), at 25℃
- 감도
- Light Sensitive
- Crystal Structure
- Cubic, Sphalerite Structure - Space Group F(-4)3m
- Merck
- 14,8506
- Solubility Product Constant (Ksp)
- pKsp: 12.3（25°C）
- Dielectric constant
- 12.2(0.0℃)
- 안정성
- 안정성 빛을 받으면 어두워짐
- 주요 응용
- PEM 연료 전지
재료 합성 전구체
- InChI
- 1S/Ag.BrH/h;1H/q+1;/p-1
- InChIKey
- ADZWSOLPGZMUMY-UHFFFAOYSA-M
- SMILES
- Br[Ag]
- Hardness, Mohs
- 2.5
- CAS 데이터베이스
- 7785-23-1(CAS DataBase Reference)
안전
- 위험 및 안전 성명
- 위험 및 사전주의 사항 (GHS)
| 위험품 표기 | Xi | ||
|---|---|---|---|
| 안전지침서 | 22-24/25 | ||
| WGK 독일 | 3 | ||
| F 고인화성물질 | 8 | ||
| 위험 참고 사항 | Irritant | ||
| TSCA | TSCA listed | ||
| 위험 등급 | 9 | ||
| HS 번호 | 2843290000 | ||
| 스토리지 클래스 | 13 - Non Combustible Solids | ||
| Hazard Classifications | Aquatic Acute 1 Aquatic Chronic 1 |
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| 기존화학 물질 | KE-31264 | ||
| 유해화학물질 필터링 | 97-1-92 | ||
| 함량 및 규제정보 | 물질구분: 유독물질; 혼합물(제품)함량정보: 무기은 염류 및 이를 25% 이상 함유한 혼합물. 다만, 염화 은(Silver chloride) 및 뇌산 은(Silver fulminate)은 제외 |
브롬화은 C화학적 특성, 용도, 생산
화학적 성질
Silver bromide, AgBr, is pale yellow crystals or powder, that darken on exposure to light, finally turning black and soluble in potassium bromide, potassium cyanide, and sodium thiosulfate solutions, only very slightly soluble in ammonia water, insoluble in water, and light sensitive. Derivation is through silver nitrate dissolving in water and a solution ofalkali bromide added slowly. The precipitated silver bromide is washed repeatedly with hotwater. The operation must be carried on in a darkroom under a ruby-red light. Used in photographic film and plates, photochromic glass and as a laboratory reagent.물리적 성질
Yellow cubic crystals or powder; refractive index 2.253; darkens on exposure to light; Mohs hardness 2.5; density 6.47g/cm3; melts at 432°C; vaporizes at 1,502°C; insoluble in water, alcohol, and most acids; slightly soluble in dilute ammonia and ammonium carbonate solutions; sparingly soluble in concentrated ammonia solution (0.33 g/100mL 10% ammonia solution at 12°C);soluble in alkali cyanide solutions.용도
A yellowish powder made by the combination of any soluble bromide with silver nitrate. Silver bromide could also be formed by exposing metallic silver to the fumes of bromine as in the daguerreotype process. It is soluble in sodium thiosulfate, potassium bromide, and potassium cyanide solutions. Silver bromides were secondary halides for the paper negative processes, albumen negative process, and wet or preserved collodion processes. Silver bromides were the primary halides for the silver bromide collodion emulsion negative and the silver bromide gelatin emulsion processes. Silver bromide is the most photosensitive silver halide.제조 방법
Silver bromide is prepared by double decomposition reaction. An aqueous solution of alkali bromide, such as sodium or potassium bromide, is slowly added to an aqueous solution of silver nitrate:Ag+ (aq) + Brˉ (aq) → AgBr(s)
The precipitate is washed repeatedly with hot water. Preparation should be in a dark room under a ruby red light.
Purification Methods
It is insoluble in dilute HNO3 or dilute NH3 but is soluble in conc NH3. Store it in the dark.브롬화은 준비 용품 및 원자재
원자재
2(1H)-Pyrimidinone, 4-amino-1-tetrahydro-6-(hydroxymethyl)-2-phenylfuro3,4-d-1,3-dioxol-4-yl-
메틸렌디브로마이드
준비 용품
브롬화은 공급 업체
글로벌( 246)공급 업체
| 공급자 | 전화 | 이메일 | 국가 | 제품 수 | 이점 |
|---|---|---|---|---|---|
| Chengdu RunZeBenTu Chemical Co., Ltd | 028-88469284 18000562381; |
rzbtsj@163.com | China | 9939 | 56 |
| Tianjin Baima Technology Co., LTD | 02288195255 15620955089 |
362698781@qq.com | China | 783 | 58 |
| Qingdao Tocean iodine products co. LTD | 18669835223 |
tuohaidian@163.com | China | 49 | 58 |
| J & K SCIENTIFIC LTD. | 18210857532 18210857532 |
jkinfo@jkchemical.com | China | 96815 | 76 |
| Meryer (Shanghai) Chemical Technology Co., Ltd. | 4006356688 18621169109 |
market03@meryer.com | China | 40202 | 62 |
| Alfa Aesar | 400-6106006 |
saleschina@alfa-asia.com | China | 30103 | 84 |
| Beijing HwrkChemical Technology Co., Ltd | 89508211 18501085097 |
sales.bj@hwrkchemical.com | China | 9407 | 55 |
| Energy Chemical | 400-0056266 |
sales8178@energy-chemical.com | China | 44850 | 61 |
| JinYan Chemicals(ShangHai) Co.,Ltd. | 13817811078 |
sales@jingyan-chemical.com | China | 9963 | 60 |
| Shanghai Hanhong Scientific Co.,Ltd. | 021-54306202 13764082696 |
info@hanhongsci.com | China | 42917 | 64 |