Thiourea Dioxide, with the chemical formula CH4N2O2S, has the CAS number 4189-44-0. It appears as a white crystalline powder with a slight odor. The basic structure of thiourea dioxide consists of a thiourea group (CH4N2S) attached to an oxygen atom (O). This compound is soluble in water, ethanol, and acetone. Thiourea dioxide is considered to be a safe chemical to handle, but it should be used with caution and proper protective equipment. It is important to avoid inhalation, ingestion, and contact with skin or eyes. In case of contact, immediate medical attention should be sought. Thiourea dioxide may cause irritation to the respiratory system, skin, and eyes. It is also important to store thiourea dioxide in a cool and dry place, away from direct sunlight and heat sources.
Applicable Fields
Textile Industry: Thiourea dioxide is commonly used in the textile industry as a reducing agent. Its purpose in this field is to remove excess dye from fabrics and to improve color fastness. The mechanism of action involves the reduction of the dye molecules, making them more soluble and easier to remove.
Photography: Thiourea dioxide is also used in the photography industry as a fixing agent. Its purpose in this field is to remove unexposed silver halide from photographic prints and films. The mechanism of action involves the formation of soluble complexes with the silver ions, allowing them to be easily washed away.
Hair Care: Thiourea dioxide is sometimes used in hair care products, such as hair straightening creams. Its purpose in this field is to break the disulfide bonds in the hair, allowing it to be reshaped. The mechanism of action involves the reduction of the disulfide bonds, making the hair more flexible and easier to manipulate.
Storage
Conditions: Store in a cool and dry place.
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