Hyposulfite meaning

A hyposulfite is a compound used in photography as a fixer for developing film and prints.


Hyposulfite definitions

Word backwards etiflusopyh
Part of speech The word "hyposulfite" is a noun.
Syllabic division hy-po-sul-fite
Plural The plural of the word hyposulfite is hyposulfites.
Total letters 11
Vogais (4) o,u,i,e
Consonants (7) h,y,p,s,l,f,t

What is Hyposulfite?

Hyposulfite, also known as sodium thiosulfate, is a chemical compound with the formula Na2S2O3. It is a colorless crystalline compound that is soluble in water. Hyposulfite is commonly used in various industrial processes and as a photographic fixing agent.

Uses of Hyposulfite

Hyposulfite has several important applications in different industries. One of its primary uses is as a fixer in photographic development processes. It is used to remove unexposed silver halide from photographic film and prints, preventing further exposure to light. In addition to its role in photography, hyposulfite is also used in the textile industry for removing excess dye from fabrics.

Chemical Properties

The chemical properties of hyposulfite make it a versatile compound for various applications. It has a molar mass of 158.11 g/mol and a density of 1.667 g/cm3. The compound is stable under normal conditions and reacts with acids to release sulfur dioxide.

Health and Safety Considerations

When handling hyposulfite, it is essential to follow proper safety precautions. The compound may cause skin and eye irritation upon contact, so protective equipment such as gloves and goggles should be worn. In case of ingestion or inhalation, medical attention should be sought immediately.

Environmental Impact

The disposal of hyposulfite should be done carefully to prevent environmental contamination. As a chemical compound, it can have harmful effects on aquatic life if improperly discarded. Proper disposal methods in accordance with local regulations should be followed to minimize environmental impact.


Hyposulfite Examples

  1. The hyposulfite solution is used in photography as a fixing agent for developing film.
  2. An excess of hyposulfite can cause over-fixation of the image, leading to loss of detail.
  3. Hyposulfite is also known as hypo, a term commonly used in the photography industry.
  4. The hyposulfite ion is a reducing agent in chemical reactions.
  5. Some industrial processes use hyposulfite as a bleaching agent.
  6. Hyposulfite solutions are often used in the textile industry for dye removal.
  7. The hyposulfite compound has a distinctive odor that can be recognized by experienced chemists.
  8. In some cases, hyposulfite can be substituted with other chemicals for similar effects.
  9. Hyposulfite plays a crucial role in the production of silver metal from silver ores.
  10. The hyposulfite molecule contains sulfur and oxygen atoms bonded together.


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  • Updated 12/05/2024 - 21:24:12