Photographers' Formulary Sodium Sulfite | Anhydrous, 100g
Pickup Available at STORE
Usually ready in 24 hours
Photographers' Formulary Sodium Sulfite | Anhydrous, 100g
STORE
Pickup Available, usually ready in 24 hours
54 Orchard Street
Ground Floor
New York NY 10002
United States
This is 100g of anhydrous Sodium Sulfite from Photographers' Formulary. It is most commonly used as a preservative in developing agents and is also an active energizer in Amidol development. It is also used within acid fixing baths and as a blackener for negative intensification processes.
Darkroom Chemistry |
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|---|---|
| Synonyms | Sulfite of Soda Sodium sulfite anhydrous Disodium sulfite Sulfurous acid, disodium salt Exsiccated sodium sulfite |
| Appearance | White granular crystals or powder |
| Uses | As a preservative of developing agents Constituent of the acid fixing bath Blackener in negative intensification Active energizer in Amidol development To clear Polaroid Type 55 black & white negatives |
| Chemical Formula | Na2SO3 |
| Notes | Sodium sulfite is the most widely used preservative in developers. It also plays an important part in the process itself. |
| Weight | 3.5 oz / 100 g |
