CAS #:

Linear Formula:

Na2CrO4• 4H2O

MDL Number:


EC No.:



(2N) 99% Sodium Chromate Tetrahydrate
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(3N) 99.9% Sodium Chromate Tetrahydrate
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(4N) 99.99% Sodium Chromate Tetrahydrate
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(5N) 99.999% Sodium Chromate Tetrahydrate
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Sodium Chromate Tetrahydrate Properties (Theoretical)

Compound Formula H8CrNa2O8
Molecular Weight 234.03
Appearance Yellow crystals or chunks
Melting Point N/A
Boiling Point N/A
Density 2.73 g/cm3
Solubility in H2O N/A
Exact Mass 233.941963
Monoisotopic Mass 233.941963

Sodium Chromate Tetrahydrate Health & Safety Information

Signal Word Danger
Hazard Statements H301-H312-H314-H317-H330-H334-H340-H350-H360FD-H372-H410
Hazard Codes T+, N
Risk Codes 45-46-60-61-21-25-26-34-42/43-48/23-50/53
Safety Statements 53-45-60-61
RTECS Number GB2958300
Transport Information UN 3288 6.1/PG 2
WGK Germany 3

About Sodium Chromate Tetrahydrate

Chromate IonSodium Chromate Tetrahydrate is generally immediately available in most volumes. Hydrate or anhydrous forms may be purchased. 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.

Sodium Chromate Tetrahydrate Synonyms

Disodium chromate tetrahydrate; chromium, diolatodioxo-, disodium salt, tetrahydrate; Sodium dioxido(dioxo)chromium hydrate (2:1:4)

Chemical Identifiers

Linear Formula Na2CrO4• 4H2O
MDL Number MFCD00149167
EC No. 231-889-5
Beilstein/Reaxys No. N/A
Pubchem CID 22146515
IUPAC Name disodium; dioxido(dioxo) chromium; tetrahydrate
SMILES O.O.O.O.[Na+].[Na+].[O-][Cr]([O-])(=O)=O
InchI Identifier InChI=1S/Cr.2Na.4H2O.4O/h;;;4*1H2;;;;/q;2*+1;;;;;;;2*-1

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


Sodium Bohr ModelSee more Sodium products. Sodium (atomic symbol: Na, atomic number: 11) is a Block D, Group 5, Period 4 element with an atomic weight of 22.989769. The number of electrons in each of Sodium's shells is [2, 8, 1] and its electron configuration is [Ne] 3s1. The sodium atom has a radius of 185.8 pm and a Van der Waals radius of 227 pm. Sodium was discovered and first isolated by Sir Humphrey Davy in 1807. In its elemental form, sodium has a silvery-white metallic appearance. It is the sixth most abundant element, making up 2.6 % of the earth's crust. Sodium does not occur in nature as a free element and must be extracted from its compounds (e.g., feldspars, sodalite, and rock salt). The name Sodium is thought to come from the Arabic word suda, meaning "headache" (due to sodium carbonate's headache-alleviating properties), and its elemental symbol Na comes from natrium, its Latin name.


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. Chromium was first discovered by Louis Nicolas Vauquelin in 1797. It was first isolated in 1798, also by Louis Nicolas Vauquelin. 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 metal element in the periodic table and the only element that exhibits antiferromagnetic ordering at room temperature, above which it tranforms 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.


January 21, 2021
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