Product Details
| Product Name: Potassium diacetate | CAS No.: 4251-29-0 |
| EC-No.: 224-217-7 | Min. Order: 1ton |
| Purity: 99% | Supply Ability: 1000T/M |
| Release date: 2025/10/21 |
Potassium Diacetate (CH₃COOK·CH₃COOH)
CAS Number: 4251-29-0
Molecular Formula: C₄H₇KO₄
Molecular Weight: 142.2 g/mol
EINECS No.: 224-207-2
Synonyms: Dipotassium acetate, Diacetate of Potassium
Grades Available: Food Grade (FCC) & Industrial Grade
1. Product Description
Potassium diacetate is a white crystalline solid or granular powder made from a combination of potassium acetate and acetic acid. It is used primarily as a preservative, mold inhibitor, and acidifier, offering effective control over bacteria and mold in food, feed, and industrial applications.
2. Physical and Chemical Properties
| Property | Description |
|---|---|
| Appearance | White crystalline or granular powder |
| Odor | Slight acetic acid odor |
| Taste | Mildly acidic, vinegar-like |
| Solubility | Soluble in water |
| pH (1% solution) | 4.5 – 5.0 |
| Density | ~1.5 g/cm³ |
| Melting Point | >300°C (decomposes) |
| Stability | Stable under recommended storage |
3. Typical Specifications
| Parameter | Unit | Food Grade (FCC) | Industrial Grade |
|---|---|---|---|
| Assay (as Potassium Diacetate) | % | ≥ 98.0 | ≥ 95.0 |
| Acetic Acid Content | % | 38.0 – 41.0 | 35.0 – 42.0 |
| Potassium Content (K) | % | 17.0 – 20.0 | 15.0 – 20.0 |
| Moisture (Loss on Drying) | % | ≤ 2.0 | ≤ 3.0 |
| pH (1% solution) | - | 4.5 – 5.0 | 4.0 – 5.5 |
| Water Insoluble Matter | % | ≤ 0.1 | ≤ 0.2 |
| Heavy Metals (as Pb) | ppm | ≤ 2.0 | ≤ 5.0 |
| Arsenic (As) | ppm | ≤ 1.0 | ≤ 3.0 |
4. Applications
Food Grade (FCC):
Preservative in bakery products, sauces, processed meats
Mold inhibitor in tortillas, cakes, pastries
Used as an acidifying agent and pH controller
Alternative to calcium or sodium propionate in “low sodium” applications
Approved in many countries under food additive code E262(ii)
Industrial Grade:
Preservative and mold control agent in animal feed and silage
Acidifier in industrial cleaners and water treatment systems
Used in agricultural formulations and non-food antimicrobial products
5. Packaging and Storage
Packaging:
25 kg plastic-lined kraft paper bags
1000 kg jumbo bags (for industrial applications)
Custom packaging available on request
Storage:
Store in a cool, dry, and well-ventilated place
Keep container tightly closed to avoid moisture uptake
Avoid contact with strong acids and oxidizers
Shelf Life: 24 months under recommended storage conditions
6. Regulatory Compliance
Complies with FCC (Food Chemicals Codex) for food-grade
Approved in EU, USA, China, and other countries as food preservative E262(ii)
Produced under HACCP, GMP, and ISO quality systems
REACH registered for industrial applications (if required)
7. Safety and Handling
Non-toxic at recommended usage levels
Avoid inhalation of dust and contact with eyes
Use gloves, mask, and eye protection during handling
Refer to SDS (Safety Data Sheet) for full safety guidance
8. Disclaimer
The data provided above is for informational purposes only. It does not constitute a legally binding specification. Users should confirm suitability for their specific application before use.
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- Since: 2025-04-07
- Address: C-309, No. 12 Yuzhou S. Rd, Haizhou, Lianyungang, Jiangsu, China

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