10034-82-9 Usage
Description
Sodium chromate tetrahydrate is an odorless, bright yellow, deliquescent crystalline compound. It is a sodium salt of chromic acid and is known for its alkaline aqueous solutions. This chemical is characterized by its yellow deliquescent crystals and is widely utilized in various industries due to its unique properties.
Uses
1. Corrosion Inhibition:
Sodium chromate tetrahydrate is used as a corrosion inhibitor in various applications, such as protecting metals from rust and other forms of corrosion. It forms a protective layer on the metal surface, preventing the oxidation process and extending the life of the material.
2. Wood Preservation:
In the wood industry, sodium chromate tetrahydrate is employed as a wood preservative. It helps to protect wood from decay, fungi, and insects, ensuring the longevity and durability of wooden structures and products.
3. Textile Industry:
Sodium chromate tetrahydrate serves as an auxiliary in the textile industry, where it is used to enhance the colorfastness and stability of dyed fabrics. It also plays a role in the processing of fibers, improving their quality and performance.
4. Organic Synthesis:
As an oxidant, sodium chromate tetrahydrate is used in the preparation of carboxylic acids from primary alcohols and ketones from secondary alcohols. Its oxidizing properties make it a valuable reagent in organic synthesis, particularly in the production of pharmaceuticals and agrochemicals.
5. Chromium Compounds Production:
Sodium chromate tetrahydrate is used as a starting material for the preparation of other chromium compounds, which find applications in various industries, including metallurgy, pigment manufacturing, and the production of dyes and inks.
6. Capillary Electrophoresis:
In the field of analytical chemistry, sodium chromate tetrahydrate can be used as a carrier electrolyte in capillary electrophoresis. This technique is employed for the separation and analysis of various compounds, taking advantage of the unique properties of sodium chromate tetrahydrate to improve the efficiency and accuracy of the process.
Air & Water Reactions
Deliquescent. Water soluble.
Reactivity Profile
Sodium chromate tetrahydrate is a strong oxidizing agent. Incompatible with strong acids . Contact with combustible materials may lead to a fire. Toxic chromium oxide fumes may form in fire [USCG, 1999].
Fire Hazard
Literature sources indicate that Sodium chromate tetrahydrate is nonflammable.
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.
Purification Methods
Crystallise the chromate from hot water (0.8mL/g). It is deliquescent.
Check Digit Verification of cas no
The CAS Registry Mumber 10034-82-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,0,0,3 and 4 respectively; the second part has 2 digits, 8 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 10034-82:
(7*1)+(6*0)+(5*0)+(4*3)+(3*4)+(2*8)+(1*2)=49
49 % 10 = 9
So 10034-82-9 is a valid CAS Registry Number.
InChI:InChI=1/Cr.2Na.4H2O.4O/h;;;4*1H2;;;;/q;2*+1;;;;;;;2*-1/rCrO4.2Na.4H2O/c2-1(3,4)5;;;;;;/h;;;4*1H2/q-2;2*+1;;;;
