7775-11-3 Usage
Description
Sodium chromate is an inorganic sodium salt consisting of sodium and chromate ions in a 2:1 ratio. It is a yellow crystalline solid that is soluble in water. Sodium chromate is used in various industries due to its chemical properties and is known for its toxicity by inhalation, ingestion, and/or skin contact. It is noncombustible and is utilized in the creation of pigments for paints and inks, as well as other chemicals and as a wood preservative.
Uses
Used in Petroleum Industry:
Sodium chromate is used as a corrosion inhibitor to protect equipment and pipelines from corrosion, ensuring the smooth operation of the petroleum industry.
Used in Wood Preservation:
Sodium chromate serves as a wood preservative, helping to protect wood from decay, fungi, and insects, thus prolonging its lifespan and maintaining its structural integrity.
Used in Textile Industry:
In the textile industry, sodium chromate is used as a dyeing auxiliary, enhancing the colorfastness and quality of dyed fabrics.
Used in Paint and Ink Production:
Sodium chromate is used to prepare pigments for paints and inks, contributing to their vibrant colors and stability.
Used in Pharmaceutical Industry:
Sodium chromate is utilized in the pharmaceutical industry for diagnostic aid, specifically in determining red blood cell volume, which is crucial for assessing various health conditions.
Used in Synthetic Chemistry:
In synthetic chemistry, sodium chromate is employed as an oxidant to convert primary alcohols to carboxylic acids and secondary alcohols to ketones, playing a vital role in the synthesis of various organic compounds.
Used as a Radioactive Agent:
Sodium chromate also finds application as a radioactive agent in specific medical and industrial processes.
Chemical Properties:
Sodium chromate, including its hexahydrate form, is a yellow crystalline solid that can be used in both solid and solution forms. It is available under various brand names such as Chromitope Sodium (Bristol-Myers Squibb) and Rachromate (Abbott).
Air & Water Reactions
Water soluble.
Reactivity Profile
SODIUM CHROMATE is a strong oxidizer. Sodium chromate absorbs moisture from the atmosphere. Incompatible with strong acids . In contact with combustible materials may cause fire. Toxic chromium oxide fumes may form in fire [USCG, 1999].
Hazard
Toxic material.
Health Hazard
Highly toxic, may be fatal if inhaled, swallowed or absorbed through skin. Avoid any skin contact. Effects of contact or inhalation may be delayed. Fire may produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may be corrosive and/or toxic and cause pollution.
Fire Hazard
Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes. Containers may explode when heated. Runoff may pollute waterways.
Potential Exposure
Used to make dyes, inks, pigments, and other chromates; in leather tanning, a corrosion inhibitor in circulating water systems; metal treatment; a drilling mud additive; chemical intermediate for chromium catalysts; colorimetry, oxidizing agent; bleaching agent; an algicide, fungicide, insecticide; in wood preservation.
Shipping
UN3087 Oxidizing solid, toxic, n.o.s., Hazard Class: 5.1; Labels: 5.1-Oxidizer, 6.1-Poisonous materials, Technical Name Required. UN3085 Oxidizing solid, corrosive, n.o.s., Hazard Class: 5.1; Labels: 5.1-Oxidizer, 8-Corrosive material, Technical Name Required.
Incompatibilities
Aqueous solution in a base. A strong oxidizer. Violent reaction with reducing agents; combustibles, strong acids; organic materials.
Check Digit Verification of cas no
The CAS Registry Mumber 7775-11-3 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,7,7 and 5 respectively; the second part has 2 digits, 1 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 7775-11:
(6*7)+(5*7)+(4*7)+(3*5)+(2*1)+(1*1)=123
123 % 10 = 3
So 7775-11-3 is a valid CAS Registry Number.
InChI:InChI=1/Cr.Na.2H2O.2O/h;;2*1H2;;/q+2;;;;;/p-2/rCrH2O4.Na/c2-1(3,4)5;/h2-3H;