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等级
ACS reagent
puriss. p.a.
Agency
reag. Ph. Eur.
蒸汽密度
6.7 (vs air)
方案
≥99.5%
杂质
≤0.005% in water insoluble matters
pH值（酸碱度）
8.6-9.8 (20 °C, 5%)
mp
971 °C (lit.)
痕量阴离子
chloride (Cl-): ≤10 mg/kg
sulfate (SO42-): ≤50 mg/kg
痕量阳离子
Ca: ≤50 mg/kg
Fe: ≤20 mg/kg
Na: ≤200 mg/kg
Pb: ≤50 mg/kg
SMILES字符串
[K+].[K+].[O-][Cr]([O-])(=O)=O
InChI
1S/Cr.2K.4O/q;2*+1;;;2*-1
InChI key
XMXNVYPJWBTAHN-UHFFFAOYSA-N
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一般描述
Potassium chromate (K2CrO4) is the potassium salt having morphological features similar to potassium sulfate (isostructural). Its crystals exhibit rhombic crystal system. It can be manufactured by reacting potassium dichromate with potassium hydroxide.[1] It has been reported to crystallize in orthorhombic space group.[2] Production of potassium chromat by a new reaction system of KOH-KNO3-H2O (binary submolten salt system) has been proposed.[3]
警示用语：
Danger
危险分类
Aquatic Acute 1 - Aquatic Chronic 1 - Carc. 1B Inhalation - Eye Irrit. 2 - Muta. 1B - Skin Irrit. 2 - Skin Sens. 1 - STOT SE 3
靶器官
Respiratory system
储存分类代码
6.1D - Non-combustible acute toxic Cat.3 / toxic hazardous materials or hazardous materials causing chronic effects
WGK
WGK 3
闪点(°F)
Not applicable
闪点(°C)
Not applicable
Redetermination of the structures of potassium sulphate and potassium chromate: the effect of electrostatic crystal forces upon observed bond lengths.
McGinnety JA.
Acta Crystallographica Section B, Structural Science, 28(9), 2845-2852 (1972)
Eagleson M.
Concise Encyclopedia Chemistry, 881-881 (1994)
A new method of potassium chromate production from chromite and KOH-KNO3-H2O binary submolten salt system.
Sun Z, et al.
AIChE Journal, 55(10), 2646-2656 (2009)
Comparative Study of Factors Influencing the Action of Corrosion Inhmitors for Mild Steel in Neutral Solution: II. Potassium Chromate.
Mercer AD and Jenkins IR.
British Corrosion Journal, 3(3), 130-135 (1968)
Cecylia Wardak
Journal of hazardous materials, 186(2-3), 1131-1135 (2010-12-21)
A new polyvinylchloride membrane sensor for Pb(2+) with solid contact based on ionic liquid has been prepared. The electrode shows a Nernstian response for lead ions over a wide concentration range (1×10(-8) to 1×10(-1) mol L(-1)) and the slope of
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