Sodium Ferrocyanide (Yellow Prussiate of Soda)
CAS Number: 13601-19-9
Sodium ferrocyanide (E535) is an inorganic anti-caking agent specifically approved for use in table salt at maximum levels of 20 mg/kg (as anhydrous compound). It prevents salt crystals from clumping during storage and high-humidity conditions by adsorbing onto crystal surfaces and interfering with agglomeration. The ferrocyanide complex is highly stable and does not release free cyanide under normal food conditions. Available as yellow crystalline decahydrate powder.
Technical Specifications
| appearance | Yellow crystalline powder (decahydrate) |
| moisture (%) | 35–37 (decahydrate form) |
| free cyanide (ppm) | not detectable |
| heavy metals (ppm) | ≤10 |
| purity (%, as Na4Fe(CN)6·10H2O) | ≥99.0 |
Applications
- Table salt anti-caking (primary application)
- Industrial salt for food processing anti-caking
- Sea salt and specialty salt products flowability
- Salt-based seasoning and dry rub blends
- Wine stabilization (potassium ferrocyanide form, blue fining)
Key Features
- Specifically effective for salt anti-caking at very low usage levels (≤20 mg/kg)
- High stability of ferrocyanide complex, no free cyanide toxicity risk
- Approved at trace levels by all major regulatory authorities
- EU E535 approved, Codex approved, FCC grade available
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CAS Number
13601-19-9
Category
Food / Beverage AdditivesAvailability
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