dipotassium dioxochromiumbis(olate)

• ChemBase编号: 105868
• 分子式: CrK2O4
• 平均质量: 194.1903
• 单一同位素质量: 193.84757934
• SMILES: [K+].[K+].[O-][Cr](=O)(=O)[O-]
• Canonical SMILES: [O-][Cr](=O)(=O)[O-].[K+].[K+]
• InChI: InChI=1S/Cr.2K.4O/q;2*+1;;;2*-1
• InChIKey: XMXNVYPJWBTAHN-UHFFFAOYSA-N

名称和登记号

名称

• IUPAC标准名: dipotassium dioxochromiumbis(olate)
• IUPAC传统名: dipotassium chromate(2-); dipotassium ion chromate(2-)
• 别名: 铬酸钾; 铬(VI) 标准浓缩液 10.00g Cr(VI); 铬酸钾 溶液; 铬酸钾 溶液; 铬(VI) 原子光谱分析标准浓缩液 1.00g Cr(VI); 铬酸钾, ACS; 1000 g/ml; Potassium chromate; Chromic acid; (K2CrO4d; dipotassium salt; Potassium chromate; Bipotassium Chromate; Dipotassium Monochromate; POTASSIUM CHROMATE ACS REAGENT GRADE; Chromium(VI) atomic spectroscopy standard concentrate 10.00 g Cr(VI); Potassium chromate solution; Potassium chromate solution; Chromium(VI) atomic spectroscopy standard concentrate 1.00 g Cr(VI); Potassium chromium(VI) oxide; Potassium chromate, ACS; Chromate, Ion chromatography standard solution, Specpure®, CrO4?

登记号

• CAS号: 7789-00-6
• EC号: 231-157-5; 232-140-5
• MDL号: MFCD00011368
• 默克索引号: 147622
• PubChem SID: 24877684; 162092619; 24847490; 24861756; 24852968; 24858896; 24845359
• PubChem CID: 24597
• 维基百科标题: Potassium_chromate

理论计算性质

• Acid pKa: -2.30103
• 质子受体: 4
• 质子供体: 0
• LogD (pH = 5.5): -6.720884
• LogD (pH = 7.4): -7.0465326
• Log P: -2.5252
• 摩尔折射率: 5.7716 cm^3
• 极化性: 6.1887565 Å^3
• 极化表面积: 80.26 Å^2
• 可自由旋转的化学键: 0
• 里宾斯基五规则: true

分子性质

理化性质

• 溶解度: 62.9 g/100 mL (20 °C) ; 79.2 g/100 mL (100 °C) in water; H2O: soluble; H2O: soluble1 M at 20 °C, clear, yellow; insoluble in alcohol; Soluble in water. Insoluble in alcohol
• 外观: Crystalline; Liquid; solid; Yellow odorless powder
• 熔点: 968°C; 971 °C(lit.); 975°C
• 沸点: 1000°C
• 密度: 2.73; 2.7320 g/cm^3
• 折射率: 1.74
• 蒸汽密度: 6.7 (vs air)
• 气味: odorless
• pH值: 8.5-10.0 (20 °C, 5%); 8.5-10.0 (25 °C, 1 M in H2O); 8.5-10.0 (25 °C, 50 mg/mL in H2O); 8.6-9.8 (20 °C, 5%); 8.6-9.8 (25 °C, 5%); 8.6-9.8 (25 °C, 50 mg/mL in H2O)

安全信息

• 保存条件: Room Temperature (15-30°C)
• RTECS编号: GB2940000
• 欧盟危险性物质标志: Carc. Cat. 2; Dangerous for the environment (N); Irritant (Xi); Muta. Cat. 2; 环境危害性(Nature polluting) (N); 氧化性(Oxidising) (O); 有毒(Toxic) (T); Toxic (T)
• 联合国危险货物编号: 3082; 3086; 3288; UN3087
• 德国WGK号: 3
• 联合国危险货物等级: 5.1; 6.1; 9
• 联合国危险货物包装类别(PG): 3; II; III
• 澳大利亚Hazchem: 2W
• 危险公开号: 49-46; 49-46-36/37/38-43-50/53; 49-46-43-50/53; R:8-36/37/38-43-46-49-50/53; R49, R46, R36/37/38, R43, R50/53
• 安全公开号: 53-26-36/37-45-61; 53-36/37-45-61; 53-45-60-61; S:14-45-53-60-61; S53, S45, S60, S61
• 欧盟危险货物分类: TO2
• 欧盟危险识别号(EUHIN): 6.1A
• 美国ERG指导号: 141
• TSCA收录: 是
• 欧盟危险品索引: 024-006-00-8
• GHS危险品标识: GHS07; GHS08; GHS09
• GHS警示词: Danger
• NFPA704:
  

  0

  3

  1

  OX
• GHS危险声明: H315-H317-H319-H335-H340-H350i-H410; H317-H340-H350i-H410; H340-H350; H340-H350-H400-H410-H315-H319-H317-H335
• GHS警示性声明: P201-P261-P273-P280-P305 + P351 + P338-P308 + P313; P201-P273-P280-P308 + P313-P501; P261-P305+P351+P338-P302+P352-P321-P405-P501A; P281-P201-P202-P308+P313-P405-P501A
• 个人保护装置: dust mask type N95 (US), Eyeshields, Faceshields, Gloves, type P2 (EN 143) respirator cartridges; 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
• RID/ADR: UN 3082 9/PG 3; UN 3288 6.1/PG 3

产品相关信息

• 纯度: ≥99%; ≥97.0%; ≥98.5%; ≥99%; ≥99.0%; ≥99.0% (RT); ≥99.5%; ≥99.5% (RT); 98%; 99.0% min; 99.99% trace metals basis
• 浓度: 1/30 M K2CrO4 (0.1N); 10.00 g/L
• 级别: ACS; ACS reagent; JIS special grade; puriss.; puriss. p.a.; purum p.a.; REAGENT; SAJ first grade; technical
• 杂质: ≤0.005% in water insoluble matters; ≤0.005% insolubles; insoluble matter, passes filter test
• 痕量阳离子: Ca: ≤0.005%; Ca: ≤50 mg/kg; Cd: ≤10 mg/kg; Cd: ≤50 mg/kg; Co: ≤20 mg/kg; Co: ≤50 mg/kg; Cu: ≤10 mg/kg; Cu: ≤50 mg/kg; Fe: ≤20 mg/kg; Fe: ≤50 mg/kg; Mg: ≤10 mg/kg; Mg: ≤5 mg/kg; Mn: ≤10 mg/kg; Mn: ≤5 mg/kg; Na: ≤0.02%; Na: ≤1000 mg/kg; Na: ≤200 mg/kg; Ni: ≤20 mg/kg; Ni: ≤50 mg/kg; Pb: ≤50 mg/kg; Sr: ≤50 mg/kg; Zn: ≤10 mg/kg; Zn: ≤50 mg/kg
• 痕量阴离子: chloride (Cl-): ≤0.005%; chloride (Cl-): ≤10 mg/kg; chloride (Cl-): ≤1000 mg/kg; chloride (Cl-): ≤50 mg/kg; sulfate (SO42-): ≤0.03%; sulfate (SO42-): ≤100 mg/kg; sulfate (SO42-): ≤200 mg/kg; sulfate (SO42-): ≤50 mg/kg; sulfate (SO42-): ≤5000 mg/kg
• 有效期: (limited shelf life, expiry date on the label)
• 干燥失重: ≤0.5% loss on drying, 105 °C
• 品质说明: ampule; volumetric
• 产品线: BioUltra
• abs.: absorption1M/504 nm, H2O cut-off
• 线性分子式: K2CrO4

详细说明

MP Biomedicals - 02194875

ACS Reagent Grade
Purity: >99%
NOT FOR EXPORT

Sigma Aldrich - 529508

包装
100 g in poly bottle

Sigma Aldrich - 35157

Caution
仅限于专业用户。注意 - 避免接触 - 使用前请了解特别说明。
General description
请访问 滴定中心 了解更多信息。

Sigma Aldrich - 02673

Preparation Note
用 K2CrO4 和 H2O 制备

Sigma Aldrich - 03377

Preparation Note
用 K2CrO4 和 H2O 制备

Sigma Aldrich - 216615

包装
100, 500 g in poly bottle