7789-42-6

• 常用中文名：溴化镉
• 常用英文名：cadmium bromide
• CAS号：7789-42-6
• 分子式：Br₂Cd
• 分子量：272.219
• 相关类别： 无机化工 无机盐 金属卤化物及卤酸盐 金属溴化物及盐
• 发布时间：2018-09-16 20:23:29
• 更新时间：2024-01-09 22:32:01

• 用于照相纸板、石版印刷等。

名称

• 中文名: 溴化镉
• 英文名: cadmium(2+),dibromide
• 中文别名: 溴化鎘
• 英文别名: cadmium(2+) dibromide; Cadmiumbromide (8CI); MFCD00015996; EINECS 232-165-1; Cadmium dibromide

物化性质

• 密度: 5,192 g/cm3
• 沸点: 863°C
• 熔点: 567°C
• 分子式: Br₂Cd
• 分子量: 272.219
• 闪点: 863°C
• 精确质量: 271.740021
• 外观性状: 黄色晶体或粉末
• 储存条件:

  保持贮藏器密封

  放入紧密的贮藏器内，储存在阴凉，干燥的地方。

• 稳定性:

  1.如果遵照规格使用和储存则不会分解；溶于水、醇和丙酮，微溶于醚。微溶于乙醚，稍溶于丙酮，溶于乙醇、盐酸，易溶于水。

• 计算化学:

  1.疏水参数计算参考值（XlogP）:无

  2.氢键供体数量:0

  3.氢键受体数量:2

  4.可旋转化学键数量:0

  5.互变异构体数量:无

  6.拓扑分子极性表面积0

  7.重原子数量:3

  8.表面电荷:0

  9.复杂度:0

  10.同位素原子数量:0

  11.确定原子立构中心数量:0

  12.不确定原子立构中心数量:0

  13.确定化学键立构中心数量:0

  14.不确定化学键立构中心数量:0

  15.共价键单元数量:3

• 更多:

  1. 性状：无色结晶或白色结晶颗粒，久置或风化逐渐变黄。在干燥空气中风化。

  2. 密度（g/mL 25ºC）：5.192

  3. 熔点（ºC）：583

  4. 沸点（ºC，常压）：963

  5. 闪点（ºC，）：863

  6. 溶解性(mg/mL)：易溶于热水。溶于冷水、乙醇、盐酸。微溶于丙酮、乙醚

MSDS

Section 1: Product Identification Chemical Name:Cadmium bromide, anhydrous, 99% CAS Registry Number:7789-42-6 Formula:CdBr2 EINECS Number:232-165-1 Chemical Family:metal halide Synonym:Cadmium dibromide Section 2: Composition and Information on Ingredients IngredientCAS NumberPercentACGIH (TWA)OSHA (PEL) Title Compound7789-42-6100%0.002mg/m30.005mg/m3 Section 3: Hazards Identification Irritating to skin, eyes and respiratory tract. Harmful by inhalation, in contact with skin and if swallowed. May Emergency Overview: cause cancer. Primary Routes of Exposure:Ingestion, inhalation Eye Contact:Causes mild to severe irritant to the eyes. Skin Contact:Causes slight to mild irritation of the skin. irritating to the respiratory tract. Harmful by inhalation. May cause coughing, headache, shortness of breath, Inhalation: chest pains and pulmonary edema. Harmful if swallowed. Ingestion may lead to sudden nausea, vomiting, bloody diarrhea, weakness, Ingestion: convulsions, and death. Harmful by inhalation, in contact with skin and if swallowed. irritating to skin, eyes and respiratory tract. Acute Health Affects: Ihalation may cause metallic taste, cough, chest pain, pulmonary edema, liver and kidney damage. Prolonged exposure may cause loss of sense of smell, weight loss, liver, lung, skeletal and kidney damage. Chronic Health Affects: Cadmium is a recognized carcinogen of the connective tissue, lungs, and the liver. NTP:Yes IARC:Yes OSHA:No SECTION 4: First Aid Measures Immediately flush the eyes with copious amounts of water for at least 10-15 minutes. A victim may need Eye Exposure: assistance in keeping their eye lids open. Get immediate medical attention. Wash the affected area with water. Remove contaminated clothes if necessary. Seek medical assistance if Skin Exposure: irritation persists. Remove the victim to fresh air. Closely monitor the victim for signs of respiratory problems, such as difficulty Inhalation: in breathing, coughing, wheezing, or pain. In such cases seek immediate medical assistance. Seek medical attention immediately. Keep the victim calm. Give the victim water (only if conscious). Induce Ingestion: vomiting only if directed by medical personnel. SECTION 5: Fire Fighting Measures Flash Point:not applicable Autoignition Temperature:none Explosion Limits:none Extinguishing Medium:none required Special Fire Fighting Procedures:No special fire fighting procedures required. Hazardous Combustion andToxic dusts contain cadmium Decomposion Products: Unusual Fire or Explosion Hazards: No unusual fire or explosion hazards. SECTION 6: Accidental Release Measures Spill and Leak Procedures:Small spills can be mixed with vermiculite or sodium carbonate and swept up. SECTION 7: Handling and Storage Handling and Storage:Store material in a tightly sealed container. Will adsorb moisture if handled in a moist environment. SECTION 8: Exposure Controls and Personal Protection Eye Protection:Always wear approved safety glasses when handling a chemical substance in the laboratory. Skin Protection:Wear appropriate chemical resistant gloves and protective clothing. Ventilation:Material may form a fine dust. If possible, handle the material in an efficient fume hood. In the absence of adequate ventilation a respirator should be worn. The use of a respiratory requires a Respirator: Respirator Protection Program to be in compliance with 29 CFR 1910.134. Ventilation:Material may form a fine dust. If possible, handle the material in an efficient fume hood. Additional Protection:No additional protection required. SECTION 9: Physical and Chemical Properties Color and Form:white pwdr. Molecular Weight:272.22 Melting Point:567° Boiling Point:863°C Vapor Pressure:no data Specific Gravity:5.192 Odor:none Solubility in Water: SECTION 10: Stability and Reactivity Stability:hygroscopic Hazardous Polymerization:no hazardous polymerization Conditions to Avoid:contact with moisture Incompatibility:active metals Decomposition Products:none SECTION 11: Toxicological Information RTECS Data:Oral (rat); LD50: 322 mg/kg. Oral (rat); LD50: 733 mg/kg/90D-C. Carcinogenic Effects:Carcinogen (as Cd) Mutagenic Effects:No data available Tetratogenic Effects:No data available SECTION 12: Ecological Information Avoid release into the environment. Very toxic to aquatic organisms. May cause long-term adverse effects in Ecological Information: the aquatic environment. SECTION 13: Disposal Considerations Disposal:Dispose of according to local, state and federal regulations. SECTION 14: Transportation Shipping Name (CFR):Cadmium compounds Hazard Class (CFR):6.1 Additional Hazard Class (CFR):NA Packaging Group (CFR):III UN ID Number (CFR):UN# 2570 Shipping Name (IATA):Cadmium compound Hazard Class (IATA):6.1 Additional Hazard Class (IATA):NA Packaging Group (IATA):III UN ID Number (IATA):UN# 2570 SECTION 15: Regulatory Information TSCA:Listed in the TSCA inventory. SARA (Title 313):Title compound see Category Code N078 for reporting. Second Ingredient:none SECTION 16 - ADDITIONAL INFORMATION N/A

毒性和生态

毒理学数据: LD50：4000mg/Kg（大鼠经口）；4720mg/Kg（兔经皮）。 LC50：9400mg/m3，2小时（小鼠吸入）。 生态学数据: 对水是极其危害的，若无政府许可，勿将材料排入周围环境。 CHEMICAL IDENTIFICATION RTECS NUMBER : EU9935000 CHEMICAL NAME : Cadmium bromide CAS REGISTRY NUMBER : 7789-42-6 LAST UPDATED : 199712 DATA ITEMS CITED : 28 MOLECULAR FORMULA : Br2-Cd MOLECULAR WEIGHT : 272.22 HEALTH HAZARD DATA ACUTE TOXICITY DATA TYPE OF TEST : LD50 - Lethal dose, 50 percent kill ROUTE OF EXPOSURE : Oral SPECIES OBSERVED : Rodent - rat DOSE/DURATION : 322 mg/kg TOXIC EFFECTS : Details of toxic effects not reported other than lethal dose value REFERENCE : 85PDAD "Evaluation of the Impact of Cadmium on the Health of Man", Oxford, UK. Pergamon Press Ltd., 1978 Volume(issue)/page/year: -,67,1978 ** OTHER MULTIPLE DOSE TOXICITY DATA ** TYPE OF TEST : TDLo - Lowest published toxic dose ROUTE OF EXPOSURE : Oral SPECIES OBSERVED : Rodent - rat DOSE/DURATION : 733 mg/kg/90D-C TOXIC EFFECTS : Kidney, Ureter, Bladder - other changes in urine composition Nutritional and Gross Metabolic - changes in iron Biochemical - Enzyme inhibition, induction, or change in blood or tissue levels - phosphatases REFERENCE : ARTODN Archives of Toxicology. (Springer-Verlag, Heidelberger Pl. 3, D-1000 Berlin 33, Fed. Rep. Ger.) V.32- 1974- Volume(issue)/page/year: 40,231,1978 *** REVIEWS *** ACGIH TLV-TWA 0.01 mg(Cd)/m3, inhalable dust DTLVS* The Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) booklet issues by American Conference of Governmental Industrial Hygienists (ACGIH), Cincinnati, OH, 1996 Volume(issue)/page/year: TLV/BEI,1997 ACGIH TLV-TWA 0.002 mg(Cd)/m3, respirable dust DTLVS* The Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) booklet issues by American Conference of Governmental Industrial Hygienists (ACGIH), Cincinnati, OH, 1996 Volume(issue)/page/year: TLV/BEI,1997 ACGIH TLV-Suspected human carcinogen DTLVS* The Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) booklet issues by American Conference of Governmental Industrial Hygienists (ACGIH), Cincinnati, OH, 1996 Volume(issue)/page/year: TLV/BEI,1997 IARC Cancer Review:Human Sufficient Evidence IMEMDT IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man. (WHO Publications Centre USA, 49 Sheridan Ave., Albany, NY 12210) V.1- 1972- Volume(issue)/page/year: 58,119,1993 IARC Cancer Review:Animal Sufficient Evidence IMEMDT IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man. (WHO Publications Centre USA, 49 Sheridan Ave., Albany, NY 12210) V.1- 1972- Volume(issue)/page/year: 58,119,1993 IARC Cancer Review:Group 1 IMEMDT IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man. (WHO Publications Centre USA, 49 Sheridan Ave., Albany, NY 12210) V.1- 1972- Volume(issue)/page/year: 58,119,1993 *** U.S. STANDARDS AND REGULATIONS *** MSHA STANDARD-air:TWA 0.2 mg(Cd)/m3 DTLVS* The Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) booklet issues by American Conference of Governmental Industrial Hygienists (ACGIH), Cincinnati, OH, 1996 Volume(issue)/page/year: 3,34,1971 *** OCCUPATIONAL EXPOSURE LIMITS *** OEL-ARAB Republic of Egypt:TWA 0.05 mg(Cd)/m3 JAN 1993 OEL-AUSTRALIA:TWA 0.05 mg(Cd)/m3 JAN 1993 OEL-BELGIUM:TWA 0.05 mg(Cd)/m3 JAN 1993 OEL-DENMARK:TWA 0.01 mg(Cd)/m3 JAN 1993 OEL-FINLAND:TWA 0.02 mg(Cd)/m3;Carcinogen JAN 1993 OEL-GERMANY;Carcinogen JAN 1993 OEL-INDIA:TWA 0.05 mg(Cd)/m3 JAN 1993 OEL-JAPAN:TWA 0.05 mg(Cd)/m3 JAN 1993 OEL-THE NETHERLANDS:TWA 0.02 mg(Cd)/m3;STEL 0.1 mg(Cd)/m3 JAN 1993 OEL-THE PHILIPPINES:TWA 0.2 mg(Cd)/m3 JAN 1993 OEL-RUSSIA:TWA 0.01 mg(Cd)/m3;STEL 0.05 mg(Cd)/m3 JAN 1993 OEL-SWEDEN:TWA 0.02 mg(Cd)/m3;Carcinogen JAN 1993 OEL-SWITZERLAND:TWA 0.05 mg(Cd)/m3 JAN 1993 OEL-THAILAND:TWA 0.2 mg(Cd)/m3;STEL 0.5 mg(Cd)/m3 JAN 1993 OEL-TURKEY:TWA 0.2 mg(Cd)/m3 JAN 1993 OEL-UNITED KINGDOM:TWA 0.01 mg(Cd)/m3 JAN 1993 OEL IN BULGARIA, COLOMBIA, JORDAN, KOREA check ACGIH TLV OEL IN NEW ZEALAND, SINGAPORE, VIETNAM check ACGIH TLV

安全

• 危害码 (欧洲): Xn,N
• 风险声明 (欧洲): 20/21/22-50/53
• 安全声明 (欧洲): S60-S61
• 危险品运输编码: UN 3077 9/PG 3
• WGK德国: 3
• RTECS号: EU9935000
• 包装等级: III
• 危险类别: 6.1

制备

1.将氢溴酸加到金属镉中，再加过量的溴水。

当金属镉大部分溶解后，滤去未溶的镉，所得滤液加热蒸发至接近饱和，在0ºC冷却结晶，分离出的结晶用水进行重结晶，即为四水合溴化镉。

在真空条件下干燥，则可得无水溴化镉。

2.将金属镉置于石英舟中，放入充满干燥氮气的耐热玻璃管内。在450℃的温度下，用氮气通过一个盛有Br2的洗瓶，把Br2带到石英舟上与Cd进行溴化反应。要使３g金属镉完全反应掉，需约2h。如果想要提高反应温度来加快溴化反应是不可取的，因为反应温度提高会有金属镉及产品被蒸发掉。当产物出现持续亮黄色时，反应结束。把CdBr2在Br2气氛中蒸馏二次，然后使CdBr2熔化，用纯的CO2脱除过量的Br2，即可获得无水溴化镉。

3.将CdBr2·4H2O(制备方法见CdBr2·4H2O制法)的晶体置于装有氢氧化钾的减压干燥器中干燥，即可得无水溴化镉。