<生产厂家价格>

铬酸钠

铬酸钠用途

主要用于墨水、印染、油漆颜料、鞣革、金属缓蚀剂，制造其他铬盐，有机合成氧化剂及化学试剂等

铬酸钠名称

[ CAS 号 ]:
7775-11-3

[ 中文名 ]:
铬酸钠

[ 英文名 ]:
Sodium chromate anhydrous

[英文别名 ]:

MFCD00003484
EINECS 231-889-5
Sodium chromate
disodium,dioxido(dioxo)chromium

铬酸钠物理化学性质

[ 密度 ]:
1.483

[ 沸点 ]:
392ºC

[ 熔点 ]:
792ºC

[ 分子式 ]:
CrNa₂O₄

[ 分子量 ]:
161.97300

[ 精确质量 ]:
161.90000

[ PSA ]:
80.26000

[ 外观性状 ]:
黄色晶体

[ 储存条件 ]:
室温

[ 水溶解性 ]:
530 G/L (20 ºC)

铬酸钠MSDS

详细MSDS(安全技术说明书)

铬酸钠毒性和生态

CHEMICAL IDENTIFICATION

RTECS NUMBER :: GB2955000

CHEMICAL NAME :: Chromic acid, disodium salt

CAS REGISTRY NUMBER :: 7775-11-3

LAST UPDATED :: 199712

DATA ITEMS CITED :: 44

MOLECULAR FORMULA :: Cr-O4.2Na

MOLECULAR WEIGHT :: 161.98

WISWESSER LINE NOTATION :: NA2 CR-O2-Q2

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

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

ROUTE OF EXPOSURE :: Intraperitoneal

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 57 mg/kg

TOXIC EFFECTS :: Behavioral - somnolence (general depressed activity) Behavioral - coma

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

ROUTE OF EXPOSURE :: Intraperitoneal

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 32 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

TYPE OF TEST :: LDLo - Lowest published lethal dose

ROUTE OF EXPOSURE :: Intravenous

SPECIES OBSERVED :: Mammal - dog

DOSE/DURATION :: 235 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

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

ROUTE OF EXPOSURE :: Intravenous

SPECIES OBSERVED :: Mammal - cat

DOSE/DURATION :: 164 mg/kg

TOXIC EFFECTS :: Vascular - BP lowering not characterized in autonomic section Lungs, Thorax, or Respiration - respiratory depression

TYPE OF TEST :: LDLo - Lowest published lethal dose

ROUTE OF EXPOSURE :: Subcutaneous

SPECIES OBSERVED :: Rodent - rabbit

DOSE/DURATION :: 243 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

TYPE OF TEST :: LDLo - Lowest published lethal dose

ROUTE OF EXPOSURE :: Intravenous

SPECIES OBSERVED :: Rodent - rabbit

DOSE/DURATION :: 32 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

TYPE OF TEST :: LDLo - Lowest published lethal dose

ROUTE OF EXPOSURE :: Intradermal

SPECIES OBSERVED :: Rodent - rabbit

DOSE/DURATION :: 250 mg/kg

TOXIC EFFECTS :: Behavioral - altered sleep time (including change in righting reflex) Behavioral - muscle weakness Lungs, Thorax, or Respiration - other changes

TYPE OF TEST :: LDLo - Lowest published lethal dose

ROUTE OF EXPOSURE :: Administration onto the skin

SPECIES OBSERVED :: Rodent - guinea pig

DOSE/DURATION :: 206 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

TYPE OF TEST :: LDLo - Lowest published lethal dose

ROUTE OF EXPOSURE :: Intraperitoneal

SPECIES OBSERVED :: Rodent - guinea pig

DOSE/DURATION :: 206 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

TYPE OF TEST :: LDLo - Lowest published lethal dose

ROUTE OF EXPOSURE :: Subcutaneous

SPECIES OBSERVED :: Rodent - guinea pig

DOSE/DURATION :: 30 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

TYPE OF TEST :: LDLo - Lowest published lethal dose

ROUTE OF EXPOSURE :: Intradermal

SPECIES OBSERVED :: Rodent - guinea pig

DOSE/DURATION :: 382 mg/kg

TOXIC EFFECTS :: Peripheral Nerve and Sensation - flaccid paralysis without anesthesia (usually neuromuscular blockage) Behavioral - somnolence (general depressed activity) Lungs, Thorax, or Respiration - other changes

TYPE OF TEST :: TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :: Intraperitoneal

DOSE :: 5 mg/kg

SEX/DURATION :: male 5 day(s) pre-mating

TOXIC EFFECTS :: Reproductive - Paternal Effects - spermatogenesis (incl. genetic material, sperm morphology, motility, and count) Reproductive - Paternal Effects - testes, epididymis, sperm duct

MUTATION DATA

TYPE OF TEST :: DNA damage

TEST SYSTEM :: Bird - chicken Embryo

REFERENCE :: CRNGDP Carcinogenesis (London). (Oxford Univ. Press, Pinkhill House, Southfield Road, Eynsham, Oxford OX8 1JJ, UK) V.1- 1980- Volume(issue)/page/year: 4,959,1983 *** 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 IARC Cancer Review:Human Inadequate 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: 23,205,1980 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: 49,49,1990 IARC Cancer Review:Animal Inadequate 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: 23,205,1980 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: 49,49,1990 TOXICOLOGY REVIEW 85DHAX "Medical and Biologic Effects of Environmental Pollutants Series," Washington, DC, National Academy of Sciences, 1972-77 Volume(issue)/page/year: Cr,22,1974 *** 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 - 68900 No. of Facilities: 3942 (estimated) No. of Industries: 69 No. of Occupations: 48 No. of Employees: 34156 (estimated) NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - 68900 No. of Facilities: 3561 (estimated) No. of Industries: 66 No. of Occupations: 59 No. of Employees: 80015 (estimated) No. of Female Employees: 3487 (estimated)

铬酸钠安全信息

[ 符号 ]:

GHS05, GHS06, GHS08, GHS09

[ 信号词 ]:
Danger

[ 危害声明 ]:
H301-H312-H314-H317-H330-H334-H340-H350-H360FD-H372-H410

[ 警示性声明 ]:
P201-P260-P273-P280-P304 + P340 + P310-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) ]:
T+:Very toxic; N:Dangerous for the environment;

[ 风险声明 (欧洲) ]:
R21;R25;R26;R34;R42/43;R45;R46;R48/23;R50/53;R60;R61

[ 安全声明 (欧洲) ]:
S45-S53-S60-S61

[ 危险品运输编码 ]:
UN 3288

[ WGK德国 ]:
3

[ RTECS号 ]:
GB2955000

[ 包装等级 ]:
II

[ 危险类别 ]:
6.1

铬酸钠制备

1.采用中和法。将重铬酸钠碱性液加入中和器。再加入重铬酸钠母液进行中和反应，经过滤、澄清、冷却结晶，制得铬酸钠成品。

2.以铬铁矿（Fe、Mg）O·（Cr 、Al、Fe）2O3为原料，在强氧化剂存在下用碱分解矿石。氧化焙烧在管式炉中进行，温度1100～1200℃。当炉料加热至不太高的温度（600～800℃）时，便开始生成铬酸钠。待温度升至接近1000℃时，铬酸钠的生成速度增大。反应原理可以下列方程式近似地表示。

反应过程中产生的副产物（亚铁酸钠、铝酸钠及硅酸钠等）又与铬铁矿、石灰及氧反应，生成铬酸钠及不溶的钙化物，因而该方法的产率较高（75%～81%）。一种改进的方法是，先在1000℃下焙烧铬铁矿和添加剂氧化钙，生成亚铬酸  铬酸钙（CaO·4CrO3·Cr2O3），然后再加入纯碱，于600～700℃使与亚铬酸  铬酸钙反应，生成铬酸钠和少量其他副产物。用水浸取处理，再向水溶液中通入CO2，将形成的Ca(OH)2变成CaCO3沉淀出来，而生成的CaCrO4 再与纯碱反应而生成NaCrO。

铬酸钠文献

Fc Engineering of Human IgG1 for Altered Binding to the Neonatal Fc Receptor Affects Fc Effector Functions.

J. Immunol. 194 , 5497-508, (2015)

Engineering of the constant Fc part of monoclonal human IgG1 (hIgG1) Abs is an approach to improve effector functions and clinical efficacy of next-generation IgG1-based therapeutics. A main focus in ...

Human Skin Cells Are More Sensitive than Human Lung Cells to the Cytotoxic and Cell Cycle Arresting Impacts of Particulate and Soluble Hexavalent Chromium.

Biol. Trace Elem. Res. 166 , 49-56, (2015)

Hexavalent chromium Cr(VI) is a known human lung carcinogen, with solubility playing an important role in its carcinogenic potency. Dermal exposure to Cr(VI) is common and has been associated with ski...

Antibody stabilization of peptide-MHC multimers reveals functional T cells bearing extremely low-affinity TCRs.

J. Immunol. 194(1) , 463-74, (2014)

Fluorochrome-conjugated peptide-MHC (pMHC) multimers are commonly used in combination with flow cytometry for direct ex vivo visualization and characterization of Ag-specific T cells, but these reagen...

更多文献

铬酸钠