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Description
Photographers' Formulary Sodium Thiosulfate (Hypo) Penta (Prismatic Rice) - 1 Lb.Sodium thiosulfate is one of the few know substances that will dissolve silver bromide. As such it is universally used in modern photographic procedures. In this process known as "fixation," the unexposed silver bromide is dissolved in the sodium thiosulfate by combining with it to form soluble complex thiosulfates of silver and sodium. UPC: 675152136039 Synonyms Antichlor Hypo Hyposulfite of soda Sodium hyposulfite Sodium subsulfite Sodium
Sodium thiosulfate is one of the few know substances that will dissolve silver bromide. As such it is universally used in modern photographic procedures.
In this process known as "fixation," the unexposed silver bromide is dissolved in the sodium thiosulfate by combining with it to form soluble complex thiosulfates of silver and sodium.
| Synonyms | Antichlor Hypo Hyposulfite of soda Sodium hyposulfite Sodium subsulfite Sodium thiosulfate, pentahydrate Thiosulfuric acid, disodium salt, pentahydrate |
| Appearance | Large white monoclinic, colorless crystals and powder Odorless |
| Uses | In preparation of fixing baths Ingredient in various reducers |
| Chemical Formula | Na 2 S 2 O 3 .5H 2 O |
| Notes | Hypo is available in two forms: anhydrous and, more commonly crystalline. Crystalline hypo, when dissolved, lowers the temperature of the water considerably, whereas anhydrous does not. Always begin with water of at least 90°F/32°C when mixing the crystalline form. Use 64% of the anhydrous salt as a substitute for crystalline hypo. |
| Packaging Info | |
|---|---|
| Package Weight | 1.1 lb |
| Box Dimensions (LxWxH) | 5.1 x 3.0 x 3.0" |
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