<生产厂家价格>

铬酸铵

铬酸铵用途

用作分析试剂。催化剂。腐蚀抑制剂。媒染剂。照相胶膜增感剂。主要用作媒染剂、照相涂层增感剂、催化剂、缓蚀剂。

铬酸铵名称

[ CAS 号 ]:
7788-98-9

[ 中文名 ]:
铬酸铵

[ 英文名 ]:
Ammonium chronate

[中文别名 ]:

鉻酸銨

[英文别名 ]:

EINECS 232-138-4
ammonium chromate
MFCD00015958

铬酸铵物理化学性质

[ 密度 ]:
1.91 g/mL at 25 °C(lit.)

[ 熔点 ]:
180°C (dec.)

[ 分子式 ]:
CrH₈N₂O₄

[ 分子量 ]:
152.07100

[ 精确质量 ]:
151.98900

[ PSA ]:
81.08000

[ LogP ]:
0.05660

[ 外观性状 ]:
黄色晶体

[ 储存条件 ]:
库房通风低温干燥,与还原剂分开存放

[ 水溶解性 ]:
H2O: 1 M at 20 °C, clear, yellow | 不同温度(℃)时每100毫升水中的溶解克数: 25g/0℃;29.2g/10℃;34g/20℃;39.3g/30℃;45.3g/40℃ 59g/60℃;76.1g/80℃

铬酸铵MSDS

详细MSDS(安全技术说明书)

铬酸铵毒性和生态

CHEMICAL IDENTIFICATION

RTECS NUMBER :: GB2880000

CHEMICAL NAME :: Chromic acid, diammonium salt

CAS REGISTRY NUMBER :: 7788-98-9

LAST UPDATED :: 199712

DATA ITEMS CITED :: 13

MOLECULAR FORMULA :: Cr-O4.2H4-N

MOLECULAR WEIGHT :: 152.10

WISWESSER LINE NOTATION :: .Z&2.CR-O4

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

MUTATION DATA

TYPE OF TEST :: DNA repair

TEST SYSTEM :: Bacteria - Escherichia coli

REFERENCE :: MUREAV Mutation Research. (Elsevier Science Pub. B.V., POB 211, 1000 AE Amsterdam, Netherlands) V.1- 1964- Volume(issue)/page/year: 133,161,1984 *** REVIEWS *** ACGIH TLV-TWA 0.05 mg(Cr)/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: TLV/BEI,1997 ACGIH TLV-Confirmed 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 *** U.S. STANDARDS AND REGULATIONS *** MSHA STANDARD-air:TWA 0.5 mg(Cr)/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: 3,35,1971 OSHA PEL (Gen Indu):CL 0.1 mg(CrO3)/m3 CFRGBR Code of Federal Regulations. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) Volume(issue)/page/year: 29,1910.1000,1994 OSHA PEL (Construc):CL 0.1 mg(CrO3)/m3 CFRGBR Code of Federal Regulations. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) Volume(issue)/page/year: 29,1926.55,1994 OSHA PEL (Shipyard):CL 0.1 mg(CrO3)/m3 CFRGBR Code of Federal Regulations. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) Volume(issue)/page/year: 29,1915.1000,1993 OSHA PEL (Fed Cont):CL 0.1 mg(CrO3)/m3 CFRGBR Code of Federal Regulations. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) Volume(issue)/page/year: 41,50-204.50,1994 *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH RECOMMENDED EXPOSURE LEVEL (REL) : NIOSH REL TO CHROMIUM(VI)-air:10H CA TWA 0.001 mg(Cr)/m3 REFERENCE : NIOSH* National Institute for Occupational Safety and Health, U.S. Dept. of Health, Education, and Welfare, Reports and Memoranda. Volume(issue)/page/year: DHHS #92-100,1992 NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOHS - National Occupational Hazard Survey (1974) NOHS Hazard Code - 81703 No. of Facilities: 336 (estimated) No. of Industries: 5 No. of Occupations: 6 No. of Employees: 1603 (estimated) NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - 81703 No. of Facilities: 31 (estimated) No. of Industries: 1 No. of Occupations: 3 No. of Employees: 2769 (estimated) No. of Female Employees: 349 (estimated)

铬酸铵安全信息

[ 符号 ]:

GHS03, GHS05, GHS08, GHS09

[ 信号词 ]:
Danger

[ 危害声明 ]:
H272-H314-H317-H334-H350i-H410

[ 警示性声明 ]:
P201-P220-P261-P273-P280-P305 + P351 + P338

[ 个人防护装备 ]:
Eyeshields;Faceshields;full-face particle respirator type N100 (US);Gloves;respirator cartridge type N100 (US);type P1 (EN143) respirator filter;type P3 (EN 143) respirator cartridges

[ 危害码 (欧洲) ]:
O,T,N

[ 风险声明 (欧洲) ]:
R49

[ 安全声明 (欧洲) ]:
S53-S17-S45-S60-S61

[ 危险品运输编码 ]:
UN 1479 5.1/PG 2

[ WGK德国 ]:
3

[ RTECS号 ]:
GB2880000

[ 包装等级 ]:
III

[ 危险类别 ]:
5.1

铬酸铵制备

1.中和法用氨水加人盛有重铬酸铵的反应器中进行中和反应，生成铬酸铵溶液，经蒸发浓缩，冷却结晶，固液分离，干燥，制得铬酸铵成品。其

2.复分解法将铬酸钾加入盛有水的反应器中，在搅拌下缓慢加入硫酸铵溶液进行复分解反应，生成铬酸铵和硫酸钾溶液，过滤除去硫酸钾，经蒸发浓缩，冷却结晶，固液分离、干燥，制得铬酸铵成品。其
3.由重铬酸钾与氨水作用，结晶提纯而制得。

铬酸铵文献

Nakamura, H.

Bull. Chem. Soc. Jpn. 68 , 997, (1995)

更多文献

铬酸铵