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Merck
CN

207802

重铬酸钾

ACS reagent, ≥99.0%

别名:

红矾钾

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关于此项目

线性分子式:
K2Cr2O7
化学文摘社编号:
7778-50-9
分子量:
294.18
NACRES:
NB.24
PubChem Substance ID:
329752023
UNSPSC Code:
12352302
EC Number:
231-906-6
MDL number:
MFCD00011367
Assay:
≥99.0%
Grade:
ACS reagent
Form:
crystals
Solubility:
water: soluble (ca.29.4 g/l at 20 °C (68 °F))

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产品名称

重铬酸钾, ACS reagent, ≥99.0%

InChI

1S/2Cr.2K.7O/q;;2*+1;;;;;;2*-1

InChI key

KMUONIBRACKNSN-UHFFFAOYSA-N

SMILES string

[K+].[K+].[O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O

grade

ACS reagent

assay

≥99.0%

form

crystals

reaction suitability

reagent type: oxidant

impurities

≤0.005% insolubles

loss

≤0.05% loss on drying

pH

3.5-5.0 (25 °C, 29.4 g/L)

mp

398 °C (lit.)

solubility

water: soluble (ca.29.4 g/l at 20 °C (68 °F))

anion traces

chloride (Cl-): ≤0.001%
sulfate (SO42-): ≤0.005%

cation traces

Ca: ≤0.003%
Na: ≤0.001%
Na: ≤0.02%
heavy metals (as Pb): ≤5 ppm

Quality Level

200

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相关类别

Application

重铬酸钾可用于制备混合软陶纳米复合材料支撑的重铬酸盐试剂。它也可以作为氧化剂，分别用于伯醇和仲醇选择氧化为相应的醛和酮。

General description

重铬酸钾为红橙色固体。它的晶体属于三斜晶系。加热至 600°C 以上时，分解得到氧气、铬酸钾和氧化铬 (III)。在酸性介质中起强氧化剂的作用。它可以通过三氧化二铬与碳酸钾和硝酸盐或氧气的熔融合成。

signalword

Danger

Hazard Classifications

Acute Tox. 2 Inhalation - Acute Tox. 3 Oral - Acute Tox. 4 Dermal - Aquatic Acute 1 - Aquatic Chronic 1 - Carc. 1B - Eye Dam. 1 - Muta. 1B - Ox. Sol. 2 - Repr. 1B - Resp. Sens. 1 - Skin Corr. 1B - Skin Sens. 1 - STOT RE 1 Inhalation - STOT SE 3

target_organs

Cardio-vascular system, Respiratory system

存储类别

5.1B - Oxidizing hazardous materials

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

法规信息

危险化学品
易制爆化学品
此项目有

历史批次信息供参考:

分析证书(COA)

Lot/Batch Number
MKCX8985
MKCX7019
MKCW0639
MKCV6315
MKCW6784

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