Preservative Sodium Diacetate
CAS NO.: 126-96-5
Molecular Formula: C4H7NaO4
Molecular Weight: 142.09
Character: White crystal powder.
Usage: Sodium diacetate has the features of high efficient antiseptic, retain freshness and nutritive value improving function. It is widely used in feed and food industry. In industrial field it is used homogenization agent, mordant and acidulant and PH modifier.
Package: 25kg plastic woven bag or 1000kg Ton-bag
Storage: It should be stored in a dry and ventilative warehouse, kept away from heat and moisture during transportation, unloaded with care so as to avoid damage. Furthermore, it must be stored separately from poisonous substances.
- Product Description
Preservative Sodium Diacetate | Food & Feed Grade Mold Inhibitor | High Purity ≥98% Supply
Preservative Sodium Diacetate (CAS No. 126-96-5) is a trusted antimicrobial and preservation agent widely used in food, feed, and industrial applications. Produced by Shanxi Zhaoyi Chemical Co., Ltd. — Product Description Manufacturer with more than 30 years in acetate business. High purity ≥98% Heavy metal concentration ≤0.001% PH in 1% aqueous solution 4.5-5.0 The firm produces 150,000 tonnes per year and provides bulk supply, flexible packaging in 25 kilogram or 1,000 kg bags, and a 5-7 day lead time.

Technical Specifications
Parameter | Specification | Test Method |
Acetic Acid Content | 39.0-41.0% | Titration |
Sodium Acetate Content | 58.0-60.0% | Calculation |
Moisture | ≤2.0% | Karl Fischer |
Heavy Metals (as Pb) | ≤0.001% | Atomic Absorption |
Arsenic (As) | ≤0.0003% | Spectrophotometry |
pH Value (10% solution) | 4.5-5.0 | pH Meter |
Formic Acid & Oxidizable Substances | ≤0.2% | Titration |
Appearance | White Crystal Powder | Visual |
Molecular Formula | C₄H₇NaO₄ | - |
Molecular Weight | 142.09 | - |

What Is Sodium Diacetate Used For?
Free acetic acid is in sodium diacetate. A subtle vinegar fragrance permeates this white crystalline powder. Formula: C 4 H 7 NaO 4 Weight: 142.09
It releases acetic acid slowly when dissolved in water or integrated into a product matrix. Mold, bacteria, and other spoilers cannot grow in this somewhat acidic environment. The buffering capability of the acid stabilizes the pH and makes it more constant than utilizing pure liquid acid.
Sodium diacetate mold inhibitor. It operates at the cellular level – interfering with microbial metabolism without compromising the quality or nutritional profile of the host material. Its double function is very useful in both feed preservation and food preparation.
Key Product Characteristics
In practical terms, sodium diacetate provides the formulator and manufacturer with the following benefits:
High purity ≥98% with tight control of impurities to ensure consistent batch to batch
broad range of antibacterial action against typical spoilage organisms such as molds and yeasts
Very high water solubility (about 1 g/ml) for homogenous dispersion in liquid or solid systems
Protects the processing equipment Non-corrosive compared to pure organic acids
Good compatibility with a broad variety of raw materials and bases for formulations
Stable buffering of pH between 4.5 and 5.0 for consistent antibacterial performance
It is also hygroscopic, thus proper sealed packaging and storage conditions are important to maintain performance and minimise clumping.

Preservative Sodium Diacetate vs Other Products
Feature | Preservative Sodium Diacetate | Calcium Propionate | Potassium Sorbate | Benzoic Acid |
Antimicrobial Spectrum | Broad (bacteria, mold, yeast) | Primarily anti-mold | Mold & yeast focused | Limited spectrum |
pH Range Effectiveness | 4.5-6.5 | 5.0-6.0 | 3.0-6.5 | Below 4.5 |
Water Solubility | Excellent (1g/ml) | Moderate | Good | Poor |
Corrosiveness | Non-corrosive | Non-corrosive | Non-corrosive | Highly corrosive |
Flavor Impact | Mild vinegar note | Neutral | Neutral | Strong taste |
Cost Efficiency | High | Moderate | Lower | Moderate |
Feed Application Approval | Widely approved | Approved | Limited | Restricted |
Nutritional Value | Provides acetate energy | Minimal | None | None |
Applications Across Industries
Sodium diacetate has a broad range of application sectors. Knowing its location allows you to choose the right grade and dosage for your needs.
Industry Feed
It is a very efficient mould inhibitor for animal feed, using sodium diacetate to avoid spoiling during storage and shipping. Water solubility makes it easier to include into dry and liquid feed systems. It also offers a bioavailable supply of salt and acetate energy for cattle that enhances nutritional value beyond preservation.
Food Processing Industry
It has use as a preservative, acidulant and pH modifier in food preparation. Good for sauces and processed meats. Snack items and breads. E262 is a recognised food additive product that is used worldwide to comply with food additive regulations. It is used by manufacturers as a safe and efficient means of extending shelf life.”
Industrial uses
It is also employed as a homogenising agent, mordant and pH modifier in numerous industrial processes apart from food and feed . It is helpful in systems that need steady acid conditions because of its buffering characteristics.
Quality Control and Compliance Standards
Every batch is made under a quality management system that is certified to ISO 9001. The manufacturing facility is accredited to ISO 14001 (Environmental Management) and ISO 45001 (Occupational Health and Safety).
Kosher and Halal certifications provided for qualifying food and feed grade customers. The product is in accordance with the national feed additive standard GB 25538-2010 and third party laboratory testing is fully supported.
Preservative Sodium Diacetate multilingual MSDS, COA and compliance papers are available on demand. Regular on-site factory audits are conducted and are open for overseas customers to carry out.

Certifications & Compliance
Certification | Status |
ISO 9001 Quality Management System | Certified |
ISO 14001 Environmental Management | Certified |
ISO 45001 Occupational Health & Safety | Certified |
Kosher Certification | Available |
Halal Certification | Available (food-grade products) |
GB 25538-2010 Feed Additive Standard | Compliant |
Third-Party Testing Support | Supported |

Packaging, Storage & Shelf Life
Sodium diacetate is available in the following packaging options:
- 25 kg inner plastic + outer woven bag (sealed, moisture-proof)
- 1,000 kg ton bag for bulk orders
Storage conditions: Store in a cool dry place ≤65% relative humidity. Avoid strong oxidants and acids. Refrigerate after opening. Use within 24 hours to prevent moisture absorption.
If the pack is sealed it may be stored for 12 months. If the product has been stored longer than this period before usage, re-inspection is recommended.

FAQ
Q: What is the approved dose of sodium diacetate in animal feed?
A: Typical application is 0.1-0.3% of the total feed weight depending on moisture content, storage conditions and desired microbial load. You may need to adjust your personal recipe based on the test results.
Q: Is this product permitted for use in food and feed?
A: Yes. Sodium diacetate is a GRAS chemical (Generally Recognised As Safe). Shanxi Zhaoyi is a manufacturer of sodium diacetate e262 preservatives. The product is prepared according to the food and feed additive standards GB 25538-2010. We also give Kosher and Halal certifications.
Q:Does sodium diacetate have any influence on the taste or nutritional value of feed?
A: At recommended levels of usage it will have no adverse effect on flavour. The true fact is that the acetate part is an energy source for animals that they can use and salt is there for electrolyte balance.
Q: What are the conditions of storage to avoid caking?
A: Stored in sealed, moisture-proof container, relative humidity ≤65%. Avoid spending much time in the open air. Open and reseal, use within 24 hours.
Q:Can you support bulk orders with short lead times?
A: We usually produce orders within 5-7 business days. Delivery on stock goods may be scheduled within 24 hours. The corporation keeps safety stock for high-demand items to assist production peak times.
Q: What import compliance paperwork is available?
A:COA, MSDS (multilingual), Halal/Kosher certifications, compliance statements etc. may be provided. The staff can also help with customs clearance papers and trade compliance assistance.
Contact Us
Looking for a stable, certified source of Preservative Sodium Diacetate? Contact our team at sxzy@sxzhaoyi.com — we respond within 2 hours.
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