Potassium Chromate 铬酸钾

CAS 7789-00-6 MFCD00011368

化学结构图

7789-00-6
SMILES: O=[Cr](=O)([O-])[O-].[K+].[K+]

化学属性

Mol. FormulaK₂CrO₄
Mol. Weight194.19
Melting PointNo Data Available
Density2.730
TSCAYes
SolubilitySoluble in water. Insoluble in alcohol
Vapor Density6.7 (vs air)
Boiling Point

别名和识别编码

Chemical NamePotassium Chromate
MDL NumberMFCD00011368
EC Number232-140-5
CAS Number7789-00-6
Merck Number14,7622
Synonym CHROMATE IC STANDARD CHROMIC ACID POTASSIUM SALT CHROMIUM(VI) ATOMIC SPECTROSCOPY STANDARD Chromate of potass Chromsäure-Kaliumsalz Dipotassium chromate (K2CrO4) Dipotassium chromate(2-) Dipotassium monochromate K2CrO4 Kaliumchromat(VI) POTASSIUM CHROMATE Potassium Chromate {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} { {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} { {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} { {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {
PubChem Substance ID24597
Chemical Name Translation铬酸钾
Wiswesser Line NotationKA2 CR-O2-Q2
LabNetwork Molecule IDLN00193306
InChIInChI=1S/Cr.2K.4O/q;2*+1;;;2*-1
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分类

  • {Chemicalbook} 无机化工产品: 无机盐: Cf铬盐
  • {SNA} Essential Chemicals, Materials Science, Metal and Ceramic Science, Potassium Salts, Research E
  • {SNA} Essential Chemicals, Metal and Ceramic Science, Potassium Salts, Research Essentials, Salts, 材料科学
  • {SNA} By Reference Material, Most common compounds for volumetric titration,

产品应用

  • 点滴分析测定钡、银等，测定　农药DDT及五氯酚钠的含量等。

相关文献及参考

  • Short: II/25A
  • Short: III/41E
  • Short: II/5
  • Merck: 14,7622

安全信息

RTECSGB2940000
Safety Statements
  • S26 In case of contact with eyes, rinse immediately with plenty of water and seek medical advice 眼睛接触后，立即用大量水冲洗并征求医生意见；
  • S36/37 Wear suitable protective clothing and gloves 穿戴适当的防护服和手套；
  • S45 In case of accident or if you feel unwell seek medical advice immediately (show the label where possible) 发生事故时或感觉不适时，立即求医（可能时出示标签）；
  • S53 Avoid exposure - obtain special instructions before use 避免接触，使用前获得特别指示说明；
  • S60 This material and its container must be disposed of as hazardous waste 该物质及其容器必须作为危险废物处置；
  • S61 Avoid release to the environment. Refer to special instructions/safety data sheet 避免释放到环境中，参考特别指示/安全收据说明书；
UN Number 3288
Risk Statements
  • R36/37/38 Irritating to eyes, respiratory system and skin 对眼睛、呼吸系统和皮肤有刺激性
  • R43 May cause sensitisation by skin contact 皮肤接触会产生过敏反应
  • R46 May cause inheritable genetic damage 可能引起遗传基因损害
  • R49 May cause cancer by inhalation 吸入会致癌
  • R50/53
WGK Germany3
GHS Symbol
Precautionary statements
  • P201 Obtain special instructions before use. 使用前获取专门指示。
  • P261 Avoid breathing dust/fume/gas/mist/vapours/spray. 避免吸入粉尘/烟/气体/烟雾/蒸汽/喷雾。
  • P273 Avoid release to the environment. 避免释放到环境中。
  • P280 Wear protective gloves/protective clothing/eye protection/face protection. 戴防护手套/防护服/眼睛的保护物/面部保护物。
  • P301+P310+P330
  • P304+P340+P312
  • P305+P351+P338
  • P308+P313
  • P333+P313
  • P391 Collect spillage. Hazardous to the aquatic environment 收集对水环境有危害的泄漏物。
Hazard statements
  • H350 May cause cancer 可能致癌
  • H410 Verytoxictoaquaticlifewithlonglastingeffects 对水生生物毒性非常大并具有长期影响。
  • H340 May cause genetic defects 可能导致遗传性缺陷
  • H317 May cause an allergic skin reaction 可能导致皮肤过敏
  • H315 Causes skin irritation 会刺激皮肤
  • H335 May cause respiratory irritation 可能导致呼吸道刺激
  • H319 Causes serious eye irritation 严重刺激眼睛
  • H411 Toxictoaquaticlifewithlonglastingeffects 对水生生物有毒性并具有长期影响。
  • H301 Toxic if swallowed 吞食有毒
Signal word Danger
Personal Protective Equipment 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 Eyeshields, Faceshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter dust mask type N95 (US), Eyeshields, Faceshields, Gloves, type P2 (EN 143) respirator cartridges
Packing GroupIII
Hazard Codes 6.1 T,N T,N,O
Storage condition 20 密封保护。
Hazard Class5.1
Warnings 危化品目录(2015) 危险化学品 
TYPE OF TEST            : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE       : Oral
SPECIES OBSERVED        : Rodent - mouse
DOSE/DURATION           : 1600 mg/kg/62W-C
TOXIC EFFECTS :
   Tumorigenic - equivocal tumorigenic agent by RTECS criteria
   Blood - leukemia
   Lungs, Thorax, or Respiration - bronchiogenic carcinoma
REFERENCE :
   JONUAI Journal of Nutrition.  (Subscription Dept., 9650 Rockville Pike,
   Bethesda, MD 20014) V.1-    1928-  Volume(issue)/page/year: 101,1431,1971

TYPE OF TEST            : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE       : Intramuscular
SPECIES OBSERVED        : Rodent - rabbit
DOSE/DURATION           : 11 mg/kg
TOXIC EFFECTS :
   Behavioral - food intake (animal)
   Behavioral - coma
   Nutritional and Gross Metabolic - weight loss or decreased weight gain
REFERENCE :
   JPETAB Journal of Pharmacology and Experimental Therapeutics.  (Williams &
   Wilkins Co., 428 E. Preston St., Baltimore, MD 21202)  V.1-    1909/10-
   Volume(issue)/page/year: 87,119,1946

TYPE OF TEST            : LDLo - Lowest published lethal dose
ROUTE OF EXPOSURE       : Subcutaneous
SPECIES OBSERVED        : Rodent - guinea pig
DOSE/DURATION           : 60 mg/kg
TOXIC EFFECTS :
   Details of toxic effects not reported other than lethal dose value
REFERENCE :
   EQSSDX Environmental Quality and Safety, Supplement.  (Stuttgart, Fed. Rep.
   Ger.)  V.1-5, 1975-76. Discontinued.  Volume(issue)/page/year: 1,1,1975

TYPE OF TEST            : LDLo - Lowest published lethal dose
ROUTE OF EXPOSURE       : Intravenous
SPECIES OBSERVED        : Mammal - dog
DOSE/DURATION           : 2900 ug/kg
TOXIC EFFECTS :
   Details of toxic effects not reported other than lethal dose value
REFERENCE :
   EQSSDX Environmental Quality and Safety,

TYPE OF TEST            : LDLo - Lowest published lethal dose
ROUTE OF EXPOSURE       : Subcutaneous
SPECIES OBSERVED        : Mammal - dog
DOSE/DURATION           : 19 mg/kg
TOXIC EFFECTS :
   Behavioral - muscle weakness
   Gastrointestinal - nausea or vomiting
REFERENCE :
   SMSJAR Scottish Medical and Surgical Journal.  (Edinburgh, Scotland)  For
   publisher information, see SMDJAK.  Volume(issue)/page/year: 26,131,1826

TYPE OF TEST            : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE       : Intraperitoneal
SPECIES OBSERVED        : Rodent - mouse
DOSE/DURATION           : 32 mg/kg

TYPE OF TEST            : Mutation in microorganisms
TEST SYSTEM             : Bacteria - Escherichia coli
DOSE/DURATION           : 3200 umol/L
REFERENCE :
   MUREAV Mutation Research.  (Elsevier Science Pub. B.V., POB 211, 1000 AE
   Amsterdam, Netherlands) V.1-    1964-  Volume(issue)/page/year: 58,175,1978

TYPE OF TEST            : Mutation in mammalian somatic cells
TEST SYSTEM             : Rodent - hamster Ovary
DOSE/DURATION           : 133 umol/L
REFERENCE :
   MUREAV Mutation Research.  (Elsevier Science Pub. B.V., POB 211, 1000 AE
   Amsterdam, Netherlands) V.1-    1964-  Volume(issue)/page/year: 151,293,1985

{hazard_c

TYPE OF TEST            : DNA repair
TEST SYSTEM             : Yeast - Schizosaccharomyces pombe
DOSE/DURATION           : 60 nmol/L
REFERENCE :
   CNJGA8 Canadian Journal of Genetics and Cytology.  (National Research
   Council of Canada, Publication Sales and Distribution, Ottawa ON K1A OR6,
   Can

{

TYPE OF TEST            : DNA repair
TEST SYSTEM             : Bacteria - Bacillus subtilis
DOSE/DURATION           : 20 mmol/L
REFERENCE :
   MUREAV Mutation Research.  (Elsevier Science Pub. B.V., POB 211, 1000 AE
   Amsterdam, Netherlands) V.1-    1964-  Volume(issue)/page/year: 58,175,1978

TYPE OF TEST            : Cytogenetic analysis
TEST SYSTEM             : Human Lymphocyte
DOSE/DURATION           : 20 umol/L
REFERENCE :
   MUREAV Mutation Research.  (Elsevier Science Pub. B.V., POB 211, 1000 AE
   Amsterdam, Netherlands) V.1-    1964-  Volume(issue)/page/year: 77,157,1980

TYPE OF TEST            : Mutation in microorganisms
TEST SYSTEM             : Bacteria - Salmonella typhimurium
DOSE/DURATION           : 35 ug/plate
REFERENCE :
   CRNGDP Carcinogenesis (London). (Oxford Univ. Press, Pinkhill House,
   Southfield Road, Eynsham, Oxford OX8 1JJ, UK)  V.1-    1980-

TYPE OF TEST            : Mutation in mic

TYPE OF TEST            : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE       : Intraperitoneal
SPECIES OBSERVED        : Rodent - mouse
DOSE                    : 60 mg/kg
SEX/DURATION            : female 8-10 day(s) after conception
TOXIC EFFECTS :
   Reproductive - Fertility - other measures of fertility
REFERENCE :
   APTOA6 Acta Pharmacologica et Toxicologica.  (Copenhagen, Denmark)  V.1-59,
   1945-86.  For publisher information, see PHTOEH  Volume(issue)/page/year:
   47,66,1980

TYPE OF TEST            : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE       : Intraperitoneal
SPECIES OBSERVED        : Rodent - mouse
DOSE                    : 30 mg/kg
SEX/DURATION            : female 8-10 day(s) after conception
TOXIC EFFECTS :
   Reproductive - Effects on Embryo or Fetus - cytological changes (including
   somatic cell genetic material)
REFERENCE :
   APTOA6 Acta Pharmacologica et Toxicologica.  (Copenhagen, Denmark)  V.1-59,
   1945-86.  For publisher information, see PHTOEH  Volume(issue)/page/year:
   47,66,1980

其他信息

  • 铬酸钾价格(试剂级):更新日期 产品编号 产品名称 包装 价格 2011/08/23 10016418 铬酸钾 500g 35元 2011/08/23 10016428 铬酸钾 500g 30元 2011/08/23 51020261 铬酸钾 10g 67.4元
  • 蒸气密度:6.7 (vs
  • Sigma Aldrich:7789-00-6(sigmaaldrich)
  • 下游产品:氧化亚铜 --> 熊去氧胆酸 --> 1,8-亚乙基萘 --> 铬酸铵
  • 参考质量标准:参考标准 指标名称 指标 工业级 外观 柠檬黄色结晶 铬酸钾(K2CrO4)/%≥ 99.5 氯化物(Cl - 计)/%≤ 0.06 硫酸盐(以SO4 2- 计)/%≤ 0.1
  • 用途二:用作分析试剂、氧化剂、媒染剂和金属防锈剂
  • 用途一:主要用于制造化学试剂及颜料等
  • MOL 文件:7789-00-6.mol
  • MSDS 信息:铬酸二钾(7789-00-6).msds
  • 用途四:点滴分析测定钡、银等，测定　农药DDT及五氯酚钠的含量等。
  • 常规方法:用内衬塑料袋的铁桶包装，每桶净重25kg或50kg。包装上应有明显的“氧化剂”和“有毒品”标志。 应贮存在阴凉、通风、干燥的库房内。远离热源和火种。切勿与酸类、油类和硫黄、易燃物品共贮混运。运输过程中要防雨淋和烈日曝晒，注意防潮。装卸时要小心轻放，防止包装破损。 失火时，可用水、砂土、各种灭火器进行扑救。
  • 外观性质:黄色斜方晶体。
  • 防护措施:参见铬酸钠。
  • 水中溶解度(g/100ml):不同温度(℃)时每100毫升水中的溶解克数: 56.3g/0℃;60g/10℃;63.7g/20℃;66.7g/30℃;67.8g/40℃ 70.1g/60℃;74.5g/90℃
  • 方法一:中和法将重铬酸钾溶解于母液和水中，加入反应器，在搅拌下加入氢氧化钾进行中和反应，生成铬酸钾呈弱碱性，经蒸发浓缩，冷却结晶，固液分离，干燥，制得铬酸钾成品。其 K2Cr2O7+2KOH→2K2CrO4+H2O 分离出的母液，返回溶解工序用于溶解重铬酸钾。
  • 毒性:参见铬酸钠。
  • 无机化合物:铬酸钾俗名铬钾石，是一种无机化合物，常温下为黄色正交或六方系晶体。相对密度为2.732，熔点为968℃，有毒。易溶于水，溶解后铬酸根离子水解溶液呈碱性，不溶于酒精及乙醚中。向黄色的铬酸钾溶液中加入酸，溶液变为橙色，这是重铬酸根的颜色。溶液中铬酸根与重铬酸根之间相互转化存在着如下平衡： 向铬酸钾溶液中加酸时，平衡向生成重铬酸钾的方向移动，向重铬酸钾溶液中加碱时，平衡向生成铬酸钾的方向移动。铬酸钾具有氧化性，在碱性介质中它与还原剂反应本身被还原为四羟基合铬 (Ⅲ) 离子Cr(OH)-4 (即亚铬酸根离子CrO-2)。向铬酸钾溶液中分别加入含有钡离子、铅离子及银离子的溶液，可生成相应的难溶铬酸盐：铬酸钡BaCrO4 (黄色)，铬酸铅pbCrO4(黄色)，铬酸银Ag2CrO4(砖红色)。可通过这些难溶铬酸盐的特征颜色，证明铬酸根离子的存在。铬酸钾可用做分析试剂、氧化剂、媒染剂、金属防锈剂、钡、银的微量分析，还可用于鞣革、医药等方面及制其他铬化合物的原料。用铬铁矿Fe(CrO2)2粉为原料，与氢氧化钾、石灰石 (白云石) 一起在空气中煅烧，再用硫酸钾溶液萃取，便可制得铬酸钾。 以上信息由Chemicalbook的晓楠编辑整理。
  • 能溶于水，不溶于醇。
  • 用途三:用于铬酸盐的制造。用作氧化剂，印染的媒染剂。用于墨水、颜料、搪瓷、金属防腐等。
  • Acros Organics:铬酸钾 Potassium chromate, for analysis, 99.5%(7789-00-6)
  • Alfa Aesar:铬酸钾,ACS,99.0%min Potassium chromate, ACS, 99.0% min(7789-00-6)
  • 图谱信息:铬酸钾(7789-00-6)红外图谱(IR1) 铬酸钾(7789-00-6)红外图谱(IR2)

系列性分类

  1. Analytical & Chromatography 分析化学与色谱
  2. Analytical Reagents
  3. Analytical Reagents for General Use - Analytical Reagents
  4. Puriss p.a. ACS - Analytical Reagents for General Use
  1. Chemical Synthesis 化学合成
  2. Building Blocks 合成砌块
  3. Heterocyclic Building Blocks 杂环合成砌块
  4. Acridines
  1. Chemical Synthesis 化学合成
  2. Synthetic Reagents 合成试剂
  3. Inorganic Salts - Synthetic Reagents
  4. Potassium - Inorganic Salts
  1. Chemical Synthesis 化学合成
  2. Synthetic Reagents 合成试剂
  3. Inorganic Salts - Synthetic Reagents
  4. Potassium - Inorganic Salts
  1. Analytical & Chromatography 分析化学与色谱
  2. Analytical Standards
  3. Alphabetic - Analytical Standards
  4. C - Alphabetic
  5. CH - C
  1. Analytical & Chromatography 分析化学与色谱
  2. Analytical Reagents
  3. Analytical Reagents for General Use - Analytical Reagents
  4. Puriss p.a. ACS - Analytical Reagents for General Use
  5. O-P, Puriss p.a. ACS - Puriss p.a. ACS
  1. Analytical & Chromatography 分析化学与色谱
  2. Analytical Standards
  3. Spectroscopy - Analytical Standards
  4. AAS - Spectroscopy
  5. AAS Concentrates - AAS
  6. 10.00 g/L - AAS Concentrates
  1. Analytical & Chromatography 分析化学与色谱
  2. Analytical Standards
  3. Spectroscopy - Analytical Standards
  4. AAS - Spectroscopy
  5. AAS Concentrates - AAS
  6. 10.00 g/L - AAS Concentrates
  1. Analytical & Chromatography 分析化学与色谱
  2. Analytical Standards
  3. Spectroscopy - Analytical Standards
  4. AAS - Spectroscopy
  5. AAS Concentrates - AAS
  6. 1.00 g/L - AAS Concentrates
  1. Analytical & Chromatography 分析化学与色谱
  2. Analytical Standards
  3. Spectroscopy - Analytical Standards
  4. AAS - Spectroscopy
  5. AAS Concentrates - AAS
  6. 1.00 g/L - AAS Concentrates
  1. Materials Science 材料科学
  2. Metal and Ceramic Science Products 金属和陶瓷科学
  3. Salts 金属盐
  4. Potassium Salts - Salts
  1. Analytical & Chromatography 分析化学与色谱
  2. Analytical Reagents
  3. Titration - Analytical Reagents
  4. Volumetric Solutions - Titration
  5. Salt Solutions - Volumetric Solutions
  6. N - R - Salt Solutions
  1. Life Science 生命科学
  2. Biochemicals and Reagents 生化试剂
  3. BioChemika Ultra
  4. Crystallization
  1. Analytical & Chromatography 分析化学与色谱
  2. Adsorbents, Filter Aids and Drying Agents
  3. Other Drying Agents
  1. Analytical & Chromatography 分析化学与色谱
  2. Inorganic Salts
  3. Others