Potassium dichromate, 100G

SKU:
207802-100G
  • $123.00

    • Description

    Potassium dichromate, 100G

    Synonym(s):
    Potassium bichromate
    Linear Formula:
    K2Cr2O7
    CAS Number:
    7778-50-9
    Molecular Weight:
    294.18
    EC Number:
    231-906-6
    MDL number:
    MFCD00011367
    PubChem Substance ID:
    329752023
    NACRES:
    NB.24

    PROPERTIES

    grade

    ACS reagent

    Quality Level

    200

    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.)

    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

    SMILES string

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

    InChI

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

    InChI key

    KMUONIBRACKNSN-UHFFFAOYSA-N

    DESCRIPTION

    General description

    Potassium dichromate is a red-orange colored solid. Its crystals belong to the triclinic crystal system. On heating above 600°C, it decomposes to give oxygen, potassium chromate and chromium(III) oxide. It acts as a strong oxidizing agent in acidic media. It can be synthesized by the fusion of chromium(III) oxide with potassium carbonate and nitrate or oxygen.[1]

    Application

    Potassium dichromate may be used in the preparation of hybride polymer-clay nanocomposite supported dichromate reagents.[2] It may also be used as an oxidant for the selective oxidation of primary and secondary alcohol to corresponding aldehydes and ketones, respectively.[3]

    Packaging

    100, 500 g in poly bottle

    SAFETY INFORMATION

    Signal Word

    Danger

    Hazard Statements

    H272 - H301 - H312 - H314 - H317 - H330 - H334 - H335 - H340 - H350 - H360FD - H372 - H410

    Precautionary Statements

    P210 - P260 - P280 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338

    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

    Storage Class Code

    5.1B - Oxidizing hazardous materials

    WGK

    WGK 3

    Flash Point(F)

    Not applicable

    Flash Point(C)

    Not applicable