Chromium 铬

CAS 7440-47-3 MFCD00010944

化学结构图

7440-47-3
SMILES: [Cr]

化学属性

Mol. FormulaCr
Mol. Weight52
Density7.14 g/mL at 25 °C(lit.)
Boiling Point2672 °C(lit.)
Melting Point1857 °C(lit.)
TSCAYes
Flash Point50 °F
Solubility不溶于水,不溶于硝酸,溶于稀盐酸、硫酸。
Appearance powder
Stability对空气敏感

别名和识别编码

Chemical NameChromium
MDL NumberMFCD00010944
CAS Number7440-47-3
EC Number231-157-5
Synonym 重铬酸钾 CHROMIUM METALLO-ORGANIC STANDARD Chrome CHROMIUM SINGLE ELEMENT PLASMA STANDARD Chromium metal 重铬酸钾, ACS, 99.0% MIN 重铬酸钾标准溶液, 0.025N STANDARDIZED SOLUTION CHROMIUM PLASMA EMISSION SPECTROSCOPY STANDARD Chromium element CR007920 Chromium, metal 重铬酸钾标准溶液, 0.1N STANDARDIZED SOLUTION Alpaste RRA 050 Chromium 铬标液 铬粉/铬标准溶液 CHROMIUM, AAS STANDARD SOLUTION CHROMIUM ATOMIC ABSORPTION SINGLE ELEMENT STANDARD CR000360 CHROMIUM(III) AA/ICP CALIBRATION/CHECK STANDARD CHROMIUM, PLASMA STANDARD SOLUTION 铬 Chrom Cr (chromium) CHROMIUM ICP STANDARD CHROMIUM METAL CR007910 CHROMIUM AA STANDARD CONCENTRATE CHROMIUM, ANALYTICAL STANDARD CHROMIUM AA STANDARD 重鉻酸鉀 CR004700 CHROMIUM Alpaste RRA 030 CR004300 二铬酸钾 重铬酸钾, PRIMARY STANDARD, ACS, 99.0% MIN CR004200 CHROMIUM, ORGANIC AAS STANDARD SOLUTION 重铬酸钾, ACCULUTE STANDARD VOLUMETRIC SOLUTION, FINAL CON CR000340 CHROMIUM, OIL BASED STANDARD SOLUTION CHROMIUM PLASMA EMISSION STANDARD 重鉻酸鉀 055-02 [5.1] CR004600 CHROMIUM AA SINGLE ELEMENT STANDARD BICHROMATE POTASSIUM 重铬酸钾标准溶液, 0.25N STANDARDIZED SOLUTION 红矾钾 Cr CHROMIUM ATOMIC ABSORPTION STANDARD CR004850 CHROMIUM POWDER
PubChem Substance ID23976
Chemical Name Translation
Merck Number14,7627
Wiswesser Line NotationCR
LabNetwork Molecule IDLN00195279
InChIInChI=1S/Cr
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分类

  • Chromium, Materials Science, Metal and Ceramic Science, Metals, Micro/NanoElectronics, Physical Vapor Deposition (PVD), Sputtering Targets, Vapor Deposition Precursors
  • {Chemicalbook} 无机化工产品: 无机盐: Cf铬盐
  • {SNA} Catalysis and Inorganic Chemistry, Chemical Synthesis, Chromium, Essential Chemicals, Inorganic Salts, Solutions and Reagents, Materials Science,
  • {SA} Catalysis and Inorganic Chemistry, Chemical Synthesis, Chromium, Essential Chemicals, Inor
  • {SNA} Catalysis and Inorganic Chemistry, Chemical Synthesis, Chromium, Materials Science, Metal and Ceramic Science, Metals
  • {SNA} Alternative Energy,
  • {SNA

产品应用

  • 用于制造坚韧优质钢及不锈钢、耐酸合金;纯铬用于电镀。

相关文献及参考

  • Short: III/13b
  • Short: III/13a
  • Short: II/5
  • Merck: 14,2231

安全信息

WGK Germanynwg
GHS Symbol
Precautionary statements
  • P273 Avoid release to the environment. 避免释放到环境中。
Hazard statements
  • H400 Verytoxictoaquaticlife 对水生生物毒性非常大。
Signal word Warning
Personal Protective Equipment Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filter
RTECSGB4200000
Safety Statements
  • S23 Do not breathe gas/fumes/vapour/spray (appropriate wording to be specified by the manufacturer) 不要吸入气体/烟雾/蒸汽/喷雾;
  • 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);
  • S36/37 Wear suitable protective clothing and gloves 穿戴适当的防护服和手套;
  • S53 Avoid exposure - obtain special instructions before use 避免接触,使用前获得特别指示说明;
  • 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;
  • 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;
  • S36/37/39 Wear suitable protective clothing, gloves and eye/face protection 穿戴适当的防护服、手套和眼睛/面保护;
  • S22 Do not breathe dust 不要吸入粉尘;
  • S16 Keep away from sources of ignition - No smoking 远离火源,禁止吸烟;
  • S27 Take off immediately all contaminated clothing 立即脱掉全部污染的衣服;
Packing GroupIII
UN Number UN 2924 3/PG 2 UN 3086 6.1/PG 1 UN1789 UN3089 UN3264
Risk Statements
  • R40 Limited evidence of a carcinogenic effect 有限证据表明其致癌作用
  • R50 Very toxic to aquatic organisms 对水生生物极毒
  • R51/53
  • R48/20
  • R23 Toxic by inhalation 吸入有毒
  • R8 Contact with combustible material may cause fire 遇到易燃物会导致起火
  • R42/43
  • R45 May cause cancer 可能致癌
  • R52/53
  • R61 May cause harm to the unborn child 可能对未出生的婴儿导致伤害
  • R46 May cause inheritable genetic damage 可能引起遗传基因损害
  • R50/53
  • R36/37/38 Irritating to eyes, respiratory system and skin 对眼睛、呼吸系统和皮肤有刺激性
  • R60 May impair fertility 可能降低生殖能力
  • R34 Causes burns 会导致灼伤
  • R26 Very toxic by inhalation 吸入极毒
  • R25 Toxic if swallowed 吞咽有毒
  • R48/23
  • R22 Harmful if swallowed 吞咽有害
  • R21 Harmful in contact with skin 与皮肤接触有害
  • R20 Harmful by inhalation 吸入有害
  • R11 Highly flammable 非常易燃
  • R20/21/22 Harmful by inhalation, in contact with skin and if swallowed 吸入、皮肤接触和不慎吞咽有害
Hazard Codes Xn N F,C,Xn T,N,T+,O
Hazard Class5.1
Storage condition Store at RT.
TYPE OF TEST            : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE       : Implant
SPECIES OBSERVED        : Rodent - rabbit
DOSE/DURATION           : 75 mg/kg
TOXIC EFFECTS :
   Tumorigenic - equivocal tumorigenic agent by RTECS criteria
   Musculoskeletal - tumors
REFERENCE :
   ZEKBAI Zeitschrift fuer Krebsforschung.  (Berlin, Fed. Rep. Ger.)  V.1-75,
   1903-71.  For publisher information, see JCROD7.  Volume(issue)/page/year:
   52,425,1942

TYPE OF TEST            : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE       : Intravenous
SPECIES OBSERVED        : Rodent - rat
DOSE/DURATION           : 2160 ug/kg/6W-I
TOXIC EFFECTS :
   Tumorigenic - equivocal tumorigenic agent by RTECS criteria
   Gastrointestinal - tumors
   Blood - lymphoma, including Hodgkin's disease
REFERENCE :
   JNCIAM Journal of the National Cancer Institute.  (Washington, DC)  V.1-60,
   1940-78.  For publisher information, see JJIND8.  Volume(issue)/page/year:
   16,447,1955

TYPE OF TEST            : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE       : Implant
SPECIES OBSERVED        : Rodent - rat
DOSE/DURATION           : 1200 ug/kg/6W-I
TOXIC EFFECTS :
   Tumorigenic - equivocal tumorigenic agent by RTECS criteria
   Blood - lymphoma, including Hodgkin's disease
   Tumorigenic - tumors at site of application
REFERENCE :
   JNCIAM Journal of the National Cancer Institute.  (Washington, DC)  V.1-60,
   1940-78.  For publisher information, see JJIND8.  Volume(issue)/page/year:
   16,447,1955

TYPE OF TEST            : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE       : Unreported
SPECIES OBSERVED        : Rodent - rat
DOSE/DURATION           : 27500 ug/kg
TOXIC EFFECTS :
   Details of toxic effects not reported other than lethal dose value
REFERENCE :
   GISAAA Gigiena i Sanitariya.  For English translation, see HYSAAV.  (V/O
   Mezhdunarodnaya Kniga, 113095 Moscow, USSR)  V.1-    1936-
   Volume(issue)/page/year: 37(10),27,1972

其他信息

  • 类别:氧化剂
  • Alfa Aesar:重铬酸钾标准溶液,0.25NStandardizedSolution Potassium dichromate, 0.25N Standardized Solution(7778-50-9)
  • 用途四:标定硫代硫酸钠标准溶液的基准。点滴分析定氯,氧化
  • 下游产品:2-喹喔啉甲酰氯 --> 肉叶云香碱 --> 2-溴吡啶-4-甲醛 --> 6-氯哒嗪-3-羧酸 --> N,N'-二苯基-N,N'-(1-萘基)-1,1'-联苯-4,4'-二胺 --> 专利兰A --> 1,4-萘醌 --> 2-氯-6-氟苯胺 --> 磺酰罗丹明B --> 铬酸钡 --> 铬酸钾 --> 4,4-二甲基-2-戊酮 --> 4,5-二乙氧基-N-甲基-1,8-萘二甲酰亚胺 --> N,N'-二苯基-N,N'-二(3-甲基苯基)-1,1'-联苯-4,4'-二胺 --> 异戊酸异戊酯 --> 氟化乙烯 --> 重铬酸钾-聚乙酰亚胺系感光高分子 --> 硫酸铬钾 --> 甲萘醌 --> 硫酸铬 --> 1,4-萘二甲酸 --> 2-氨基-6-甲氧基苯甲酸 --> N,N'-二苯基联苯二胺 --> 3,5-二甲基-4-异恶唑甲醛 --> 酸性蓝 83 --> 3,4-二硝基苯甲酸 --> 铬锡红 --> 铬酸锌(1:1) --> 马来酰亚胺 --> 2,5-二硝基苯甲酸 --> 酸性兰 9 --> 亚铬酸铜 --> 对磺酰胺苯甲酸 --> 2-溴-4-吡啶羧酸 --> 2,4-二硝基苯甲酸 --> 锌黄 --> 反式-2-癸醛 --> ABS/CU-NI电磁屏蔽复合材料
  • 重铬酸钾价格(试剂级):更新日期 产品编号 产品名称 包装 价格 2011/08/23 53100560 重铬酸钾;红矾钾 500ml 100元 2011/08/23 10016618 重铬酸钾;红矾钾 500g 34元 2011/08/23 10016628 重铬酸钾;红矾钾 500g 31元
  • 爆炸物危险特性:与还原剂、硫、磷等混合受热、撞击、摩擦可爆
  • 毒性分级:高毒
  • 非凝固型固定剂:重铬酸钾用作固定剂的浓度1~3%。其水溶液略具酸性,亦为一种强氧化剂。因此不能与酒精、甲醛液等事先储藏。同时为一种强烈的硬化剂,渗透力薄弱,所以很少单独使用。特点:强氧化剂,强硬化剂;渗透力弱。常与其它固定剂配合使用。
  • 用途三:用于生产铬明矾、氧化铬绿、铬黄颜料。搪瓷工业用它与长石粉、石英砂等混合后煅烧成珐琅粉,作绿色的着色剂。用于调制火柴药头,起氧化防潮作用。用作轻革的鞣革剂。媒介染料染色和印花用作媒染剂。制合成香料用作氧化剂。用于电焊条、印刷油墨,金属钝化。用作有机合成的氧化剂和催化剂及医药品的原料。
  • 注意事项:[1]本品可直接溶于水,不须配成制剂使用。 [2]严格要求掌握用药时期和用药量,喷施要均匀一致,以喷湿而不滴流为度。 [3]初次使用地区应在当地农业技术部门指导下使用。 [4]不可与中性或碱性药液一起施用。
  • 可燃性危险特性:不可燃烧; 火场产生有毒含铬化物烟雾;
  • 常规方法:用内衬塑料袋的铁桶包装,每桶净重50kg、100kg。或用衬有二层聚乙烯塑料袋的编织袋包装,每袋净重40kg。包装上应有明显的“氧化剂”和“有毒品”标志。 属二级无机氧化剂,危规编号:23003。应贮存在阴凉、通风、干燥的库房内。容器必须密封、防潮。不得与有机物、易燃物、强酸共贮混运。运输时防雨淋和烈日曝晒。装卸时要小心轻放,防止铁桶碰撞。 失火时,可用水、砂土、二氧化碳灭火器扑救。
  • 参考质量标准:化工行业标准HG/T2324-92 指标名称 指标(工业级) 优等品 一等品 合格品 外观 橙红色结晶 重铬酸钾(K2Cr207)/%≥ 99.7 99.5 99.0 氯化物(以Cl - 计)/%≤ 0.05 0.05 0.08 水不溶物/%≤ 0.02 0.02 0.05 硫酸盐(以SO4 2- 计)/%≤ 0.02 0.05 - 水分/%≤ 0.03 0.
  • 毒性:参见重铬酸钠。
  • 常规方法:产品用内衬聚乙烯塑料袋的铁桶包装,每桶净重50kg或100kg。 应贮存放于干燥、清洁的库房内。不得与

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