Skip to main content

Potassium Dichromate

CAS #: 7778-50-9
Linear Formula:
K2Cr2O7
MDL Number
MFCD00011367
EC No.:
231-906-6

ORDER

Product Product Code ORDER SAFETY DATA Technical data
(2N) 99% Potassium Dichromate K-CRAT2-02 SDS > Data Sheet >
(3N) 99.9% Potassium Dichromate K-CRAT2-03 SDS > Data Sheet >
(4N) 99.99% Potassium Dichromate K-CRAT2-04 SDS > Data Sheet >
(5N) 99.999% Potassium Dichromate K-CRAT2-05 SDS > Data Sheet >
WHOLESALE/SKU 0000-742-{{nid}}

Potassium Dichromate Properties (Theoretical)

Compound Formula K2Cr2O7
Molecular Weight 294.19
Appearance Orange to red crystals
Melting Point 398 °C
Boiling Point N/A
Density 2.676 g/cm3
Solubility in H2O N/A
Exact Mass 293.772831
Monoisotopic Mass 293.772831

Potassium Dichromate Health & Safety Information

Signal Word Danger
Hazard Statements H272-H301-H312-H314-H317-H330-H334-H340-H350-H360-H372-H410
Hazard Codes O,T+, N
Risk Codes 45-46-60-61-8-21-25-26-34-42/43-48/23-50/53
Safety Statements 53-45-60-61
RTECS Number 53-45-60-61
Transport Information UN 3086 6.1/PG 1
WGK Germany 3
GHS Pictogram
Image
Oxidizing Material - GHS03
,
Image
Corrosive - GHS05
,
Image
Skull and Crossbones - GHS06
,
Image
Health Hazard - GHS08

About Potassium Dichromate

Dichromate IonPotassium Dichromate is generally immediately available in most volumes. High purity, submicron and nanopowder forms may be considered. American Elements produces to many standard grades when applicable, including Mil Spec (military grade); ACS, Reagent and Technical Grade; Food, Agricultural and Pharmaceutical Grade; Optical Grade, USP and EP/BP (European Pharmacopoeia/British Pharmacopoeia) and follows applicable ASTM testing standards. Typical and custom packaging is available. Additional technical, research and safety (MSDS) information is available as is a Reference Calculator for converting relevant units of measurement.

Synonyms

Potassium bichromate, Dipotassium bichromate, Dipotassium dichroma, Iopezite, dipotassium oxido-(oxido-dioxo-chromio)oxy-dioxo-chromium, Dichromic acid dipotassium salt, Chromic acid, dipotassium salt

Chemical Identifiers

Linear Formula K2Cr2O7
Pubchem CID 24502
MDL Number MFCD00011367
EC No. 231-906-6
IUPAC Name dipotassium; oxido-(oxido(dioxo)chromio)oxy-dioxochromium
Beilstein/Reaxys No.
SMILES [K+].[K+].[O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O
InchI Identifier InChI=1S/2Cr.2K.7O/q;;2*+1;;;;;;2*-1
InchI Key KMUONIBRACKNSN-UHFFFAOYSA-N
Chemical Formula
Molecular Weight
Standard InchI
Appearance
Melting Point
Boiling Point
Density

Packaging Specifications

Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Shipping documentation includes a Certificate of Analysis and Safety Data Sheet (SDS). Solutions are packaged in polypropylene, plastic or glass jars up to palletized 440 gallon liquid totes, and 36,000 lb. tanker trucks.

Related Elements

Elemental PotassiumSee more Potassium products. Potassium (atomic symbol: K, atomic number: 19) is a Block S, Group 1, Period 4 element with an atomic weight of 39.0983. The number of electrons in each of Potassium's shells is [2, 8, 8, 1] and its electron configuration is [Ar] 4s1. The potassium atom has a radius of 227.2 pm and a Van der Waals radius of 275 pm. Potassium was discovered and first isolated by Sir Humphrey Davy in 1807. Potassium is the seventh most abundant element on earth. It is one of the most reactive and electropositive of all metals and rapidly oxidizes. As with other alkali metals, potassium decomposes in water with the evolution of hydrogen because of its reacts violently with water, it only occurs in nature in ionic salts.Potassium Bohr Model In its elemental form, potassium has a silvery gray metallic appearance, but its compounds (such as potassium hydroxide) are more frequently used in industrial and chemical applications. The origin of the element's name comes from the English word 'potash,' meaning pot ashes, and the Arabic word qali, which means alkali. The symbol K originates from the Latin word kalium.

See more Chromium products. Chromium (atomic symbol: Cr, atomic number: 24) is a Block D, Group 6, Period 4 element with an atomic weight of 51.9961. Chromium Bohr ModelThe number of electrons in each of Chromium's shells is 2, 8, 13, 1 and its electron configuration is [Ar] 3d5 4s1. Louis Nicolas Vauquelin first discovered chromium in 1797 and first isolated it the following year. The chromium atom has a radius of 128 pm and a Van der Waals radius of 189 pm. In its elemental form, chromium has a lustrous steel-gray appearance. Elemental ChromiumChromium is the hardest metallic element in the periodic table and the only element that exhibits antiferromagnetic ordering at room temperature, above which it transforms into a paramagnetic solid. The most common source of chromium is chromite ore (FeCr2O4). Due to its various colorful compounds, Chromium was named after the Greek word 'chroma.' meaning color.