IARC Cancer Review: Group 1 IMEMDT    IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man . 49 , 1990,p. 49.(World Health Organization, Internation Agency for Research on Cancer,Lyon, France.: ) (Single copies can be ordered from WHO Publications Centre U.S.A., 49 Sheridan Avenue, Albany, NY 12210) ; Human Inadequate Evidence IMEMDT    IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man . 23 , 1980,p. 205.(World Health Organization, Internation Agency for Research on Cancer,Lyon, France.: ) (Single copies can be ordered from WHO Publications Centre U.S.A., 49 Sheridan Avenue, Albany, NY 12210) ; Human Sufficient Evidence IMEMDT    IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man . 49 , 1990,p. 49.(World Health Organization, Internation Agency for Research on Cancer,Lyon, France.: ) (Single copies can be ordered from WHO Publications Centre U.S.A., 49 Sheridan Avenue, Albany, NY 12210) ; Animal Inadequate Evidence IMEMDT    IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man . 23 , 1980,p. 205.(World Health Organization, Internation Agency for Research on Cancer,Lyon, France.: ) (Single copies can be ordered from WHO Publications Centre U.S.A., 49 Sheridan Avenue, Albany, NY 12210) . Reported in EPA TSCA Inventory. EPA Genetic Toxicology Program. Chromium and its compounds are on the Community Right-To-Know List.

OSHA PEL: Cl 0.1 mg(CrO₃)/m³
ACGIH TLV: TWA 0.05 mg(CrO₃)/m³
NIOSH REL: (Chromium(VI)) TWA 25 µg(Cr(VI))/m³; CL 50 µg/m³/15M

For occupational chemical analysis use NIOSH: Chromium Hexavalent 7024.

The Disodium chromate with CAS registry number of 7775-11-3 is also called Sodiumchromate. Its EINECS registry number is 231-889-5. The IUPAC name is disodium dioxido(dioxo)chromium. In addition, the molecular formula is CrH₂O₄.2Na and the molecular weight is 163.97. It is a kind of Yellow crystals or crystalline powder and belongs to the classes of Inorganics; Inorganic Salts; Salts; Sodium Salts; SodiumMetal and Ceramic Science; Synthetic Reagents.

Physical properties about this chemical are: (1)#H bond acceptors:4; (2)#H bond donors:2; (3)Polar Surface Area:74.6 ?2; (4)Exact Mass: 161.89971; (5)MonoIsotopic Mass: 161.89971; (6)Topological Polar Surface Area: 80.3; (7)Heavy Atom Count: 7; (8)Complexity: 62.2; (9)Covalently-Bonded Unit Count: 3.

Preparation of Disodium chromate: it can be prepared by chromite in the presence of strong oxidizing agents. The reaction temperature is 1100-1200 °C. The equation is as follows:

Uses of Disodium chromate: it is mainly used as corrosion inhibitors for ink, paint and metal, and used as oxidant in organic synthesis. In addition, it is a kind of inhibitor for concrete admixtures.

When you are using this chemical, please be cautious about it as the following:
It has risk of explosion by shock, friction, fire or other sources of ignition. And it contact with combustible material may cause fire. It may cause sensitization by inhalation and skin contact. Besides, it has danger of serious damage to health by prolonged exposure through inhalation. And it is very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. In addition, it may cause cancer and heritable genetic damage. You should avoid exposure - obtain special instruction before use. During using it, in case of accident or if you feel unwell, seek medical advice immediately (show label where possible). This material and/or its container must be disposed of as hazardous waste. Moreover, you should avoid release to the environment. You can refer to special instructions safety data sheet.

You can still convert the following datas into molecular structure:
(1)SMILES: [Na+].[Na+].[O-][Cr]([O-])(=O)=O
(2)InChI: InChI=1/Cr.2Na.4O/q;2*+1;;;2*-1/rCrO4.2Na/c2-1(3,4)5;;/q-2;2*+1
(3)InChIKey: PXLIDIMHPNPGMH-JYQPEEMKAO

The toxicity data is as follows: