Sodium Dithionite is the same as Sodium hydrosulfite CAS N°: 7775-14-6. Formula Na₂S₂O₄
This is a strong reducing agent for indigo vats.
The difference for this powder is that it does not have the strong sulfur smell that comes with traditional sodium hydrosulfit.
For use in an indigo vat I usually use the formula of 5 grams indigo, 5 grams of sodium diothonite and 12 grams of soda ash per liter water. You multiply this per the number of liters you want your vat to be.
This powder is packed in a 250 gram in a double plastic ziplock bag.
Key Spec Table
| CAS # | EC Number | Hill Formula | Chemical Formula | Molar Mass |
|---|---|---|---|---|
| 7775-14-6 | 231-890-0 | Na₂O₄S₂ | Na₂S₂O₄ | 174.11 g/mol |
| Description | |
|---|---|
| Catalogue Number | 106505 |
| Synonyms | Sodium hydrosulfite, Sodium hypodisulfite |
| Product Information | |
|---|---|
| CAS number | 7775-14-6 |
| EC index number | 016-028-00-1 |
| EC number | 231-890-0 |
| Hill Formula | Na₂O₄S₂ |
| Chemical formula | Na₂S₂O₄ |
| Molar Mass | 174.11 g/mol |
| HS Code | 2831 10 00 |
| Quality Level | MQ200 |
| Physicochemical Information | |
|---|---|
| Density | 2.5 g/cm3 (20 °C) |
| Flash point | >100 °C |
| Ignition temperature | >200 °C |
| Melting Point | 100 °C (decomposition) |
| pH value | 5.5 - 8.5 (50 g/l, H₂O, 20 °C) |
| Bulk density | 1250 kg/m3 |
| Solubility | 250 g/l (slow decomposition) |
| Storage and Shipping Information | |
|---|---|
| Storage | Store at +2°C to +30°C. |
Sodium Dithionite 60% 250grams
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