溴化钾

溴化钾用途

【用途一】
用于电影胶片、照相胶卷的乳剂或配制显影剂，在医疗上用作镇静剂
【用途二】
用作分析试剂和显影剂，也用于制药工业
【用途三】
感光材料工业用于制造感光胶片、显影药、底片加厚剂、调色剂和彩色照片漂白剂等。医药上用作神经镇静剂(三溴片)。此外还用于化学分析试剂，分光和红外线的传递，制特种肥皂，以及雕刻、石印等方面。
【用途四】
用于制造感光胶片显影药，底片加厚剂。还用作神经镇静剂，还用于制特种肥皂，雕刻及石印等方面。
【用途五】
点滴分析测定铜及银。极谱分析铟、镉和砷。显影剂。农药分析。

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溴化钾名称

[ CAS 号 ]:
7758-02-3

[ 中文名 ]:
溴化钾

[ 英文名 ]:
Potassium bromide

[英文别名 ]:

MFCD00011358
EINECS 231-830-3
MFCD00010896
Potassium bromide
KBr
Bromide salt of potassium

溴化钾物理化学性质

[ 密度 ]:
3.119 g/mL at 25 °C(lit.)

[ 沸点 ]:
58.8 °C(lit.)

[ 熔点 ]:
734 °C(lit.)

[ 分子式 ]:
BrK

[ 分子量 ]:
119.002

[ 闪点 ]:
1435°C

[ 精确质量 ]:
117.882034

[ 外观性状 ]:
无臭白色或无色结晶固体

[ 蒸汽密度 ]:
7.14 (vs air)

[ 蒸汽压 ]:
175 mm Hg ( 20 °C)

[ 折射率 ]:
1.559

[ 储存条件 ]:
2-8°C

[ 稳定性 ]:
Stable. Incompatible with strong oxidizing agents, strong acids, bromine trifluoride and bromine trichloride.

[ 水溶解性 ]:
650 g/L (20 ºC)

溴化钾MSDS

详细MSDS(安全技术说明书)

溴化钾毒性和生态

CHEMICAL IDENTIFICATION

RTECS NUMBER :: TS7650000

CHEMICAL NAME :: Potassium bromide

CAS REGISTRY NUMBER :: 7758-02-3

LAST UPDATED :: 199710

DATA ITEMS CITED :: 10

MOLECULAR FORMULA :: Br-K

MOLECULAR WEIGHT :: 119.01

WISWESSER LINE NOTATION :: .KA..E

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 :: 3070 mg/kg

TOXIC EFFECTS :: Sense Organs and Special Senses (Olfaction) - effect, not otherwise specified Behavioral - somnolence (general depressed activity) Behavioral - ataxia

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 3120 mg/kg

TOXIC EFFECTS :: Sense Organs and Special Senses (Olfaction) - effect, not otherwise specified Behavioral - somnolence (general depressed activity) Behavioral - ataxia

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Intraperitoneal

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 1030 mg/kg

TOXIC EFFECTS :: Sense Organs and Special Senses (Olfaction) - effect, not otherwise specified Behavioral - somnolence (general depressed activity) Behavioral - ataxia

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Intraperitoneal

SPECIES OBSERVED :: Rodent - guinea pig

DOSE/DURATION :: 980 mg/kg

TOXIC EFFECTS :: Sense Organs and Special Senses (Olfaction) - effect, not otherwise specified Behavioral - somnolence (general depressed activity) Behavioral - ataxia

MUTATION DATA

TYPE OF TEST :: Cytogenetic analysis

TEST SYSTEM :: Rodent - rat Ascites tumor

DOSE/DURATION :: 200 mg/kg

REFERENCE :: GANNA2 Gann. Japanese Journal of Cancer Research. (Tokyo, Japan) V.1-75, 1907-84. For publisher information, see JJCREP. Volume(issue)/page/year: 54,155,1963 *** U.S. STANDARDS AND REGULATIONS *** EPA FIFRA 1988 PESTICIDE SUBJECT TO REGISTRATION OR RE-REGISTRATION FEREAC Federal Register. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) V.1- 1936- Volume(issue)/page/year: 54,7740,1989 *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOHS - National Occupational Hazard Survey (1974) NOHS Hazard Code - 80197 No. of Facilities: 12918 (estimated) No. of Industries: 92 No. of Occupations: 46 No. of Employees: 50375 (estimated) NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - 80197 No. of Facilities: 10535 (estimated) No. of Industries: 66 No. of Occupations: 55 No. of Employees: 115875 (estimated) No. of Female Employees: 26600 (estimated)

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溴化钾安全信息

[ 符号 ]:

GHS07

[ 信号词 ]:
Warning

[ 危害声明 ]:
H319

[ 警示性声明 ]:
P280-P305 + P351 + P338-P337 + P313

[ 个人防护装备 ]:
dust mask type N95 (US);Eyeshields;Gloves

[ 危害码 (欧洲) ]:
Xi:Irritant

[ 风险声明 (欧洲) ]:
R36

[ 安全声明 (欧洲) ]:
S26-S45-S61-S7/9-S39-S36

[ 危险品运输编码 ]:
UN 1744 8/PG 1

[ WGK德国 ]:
2

[ RTECS号 ]:
TS7650000

[ 海关编码 ]:
2827510000

溴化钾制备

1.尿素还原法将溶有尿素的苛性钾溶液送人反应器中，于80℃缓慢加入溴素进行反应，至Ph值为6--7时反应完全。将反应液加入贮槽用活性炭脱色，待溶液澄明后再过滤、蒸发、结晶、离心分离、干燥，即得溴化钾成品。其反应方程式如下：

2.将碳酸钾或氢氧化钾溶于水，在50～60℃时加入尿素，溶解后慢慢通入溴，生成溴化钾。或者利用溴与铁反应生成溴化铁，再与碳酸钾反应，制得溴化钾。

3.用高纯度的单酸钾配制成水溶液，加入由溴化钾水溶液制备的纯溴，反应时令溴稍过量，加热使溴的颜色消失，再滴加少量溴，如果溴不再褪色说明反应进行完全。遂煮沸除去过量的溴，继续浓缩至液面有结晶膜形成，停止加热，冷却后即有溴化钾结晶析出。用纯水重结晶，离心脱水，真空干燥，保存于有溴化钙的干燥器中。或用高纯度碳酸钾与氢溴酸反应，也可制得溴化钾，最后在氢气流中熔融溴化钾可得到完全的无水物。

4.氢氧化钾与溴反应，以尿素还原生成溴酸盐，再经过滤、蒸发、结晶而制得。

5. 以工业溴化钾为原料，根据原料中SO ₄ ^2-离子含量和 Ca ²⁺ 离子的含量，在其水溶液中，加入适量氢化钡和草酸钾，搅拌使之溶解混合均，（使硫酸钡、草酸钙沉淀析出），加入氢氧化钾（其用量取决于原料中Fe ³⁺离子含量）至溶液呈中性；通入硫化氢气体（稍过量），使重金属以硫化物形式完全析出。加热，使过量的硫化氢逸出，加双氧水氧化，之后，测定溶液中SO ₄ ^2- 离子的含量，若超标，则再加入氢氧化钡和氢氧化钾，直至合格。过滤，加热蒸发滤液至有结晶出现，冷却结晶，离心甩干，干燥，即得试剂溴化钾。

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溴化钾海关

[ 海关编码 ]: 2827510000

溴化钾文献

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更多文献

溴化钾

溴化钾用途

溴化钾名称

溴化钾物理化学性质

溴化钾MSDS

详细MSDS(安全技术说明书)

溴化钾毒性和生态

CHEMICAL IDENTIFICATION

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

MUTATION DATA

溴化钾安全信息

溴化钾制备

溴化钾海关

溴化钾文献

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