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LC5394 Sodium dichromate dihydrate
for analysis EMSURE ACS


Order number Packaging Quantity Price €
AC32394 Plastic bottle 250 g 32.18
AC32394 Plastic bottle 1 kg 963


Product information
Grade ACS
Synonyms Sodium bichromate, Sodium pyrochromate
Hill Formula Cr2Na2O7*2H2O
Chemical formula Na2Cr2O7 * 2 H2O
HS Code 2841 30 00
EC number 234-190-3
Molar mass 298.00 g/mol
EC index number 024-004-00-7
CAS number 7789-12-0


Chemical and physical data
Solubility 731.8 g/l (20 °C)
Melting point 356.7 °C (anhydrous substance)
Molar mass 298.00 g/mol
Density 2.35 g/cm3 (20 °C)
Bulk density 1200 kg/m3
pH value 4.0 (1 g/l, H2O, 20 °C)
Boiling point 400 °C (decomposition)



Safety information
R Phrase R 45-46-60-61- 8-21-25-26-34-42/43-48/23-50/53
May cause cancer.May cause heritable genetic damage.May impair fertility.May cause harm to the unborn child.Contact with combustible material may cause fire.Also harmful in contact with skin.Also toxic if swallowed.Also very toxic by inhalation.Causes burns.May cause sensitization by inhalation and skin contact.Also toxic: danger of serious damage to health by prolonged exposure through inhalation.Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment.
S Phrase S 53-45-60-61
Avoid exposure – obtain special instructions before use.In case of accident or if you feel unwell, seek medical advice immediately (show the label where possible).This material and its container must be disposed of as hazardous waste.Avoid release to the environment. Refer to special instructions/ Safety data sheets.
Categories of danger carcinogenic, mutagenic, toxic for reproduction, oxidizing, very toxic, corrosive, sensitizing, dangerous for the environment
Hazard Symbol


Very toxic

Dangerous for the environment

RTECS HX7750000
Storage class Oxidizing agents (TRG 515 Group 2+3)
WGK WGK 3 highly water endangering
Disposal 22
Inorganic peroxides and oxidants as well as bromine and iodine should be rendered harmless by reduction with acidic sodium thiosulfate solution (Cat. No. 106513); container D or E. Slightly soluble oxidants should be collected separately in container E or I.


Transport information
Declaration (transport by sea) IMDG-Code UN 3086 TOXIC SOLID, OXIDIZING, N.O.S.(SODIUM DICHROMATE), 6.1 (5.1), II
Declaration (transport by air) IATA-DGR UN 3086 TOXIC SOLID, OXIDIZING, N.O.S.(SODIUM DICHROMATE), 6.1 (5.1), II


Toxicological data
LD 50 oral LD50 rat 50 mg/kg
LD 50 dermal LD50 rabbit 1000 mg/kg


Assay (iodometric) 99.5 – 100.5 %
Identity passes test
Insoluble matter ≤ 0.005 %
Chloride (Cl) ≤ 0.002 %
Sulphate (SO4) ≤ 0.01 %
Al (Aluminium) ≤ 0.002 %
Ca (Calcium) ≤ 0.002 %
Cu (Copper) ≤ 0.001 %
Fe (Iron) ≤ 0.002 %
K (Potassium) ≤ 0.01 %
Mg (Magnesium) ≤ 0.005 %
Pb (Lead) ≤ 0.002 %