Preservative

Sodium Diacetate

Chemical formula: C4H7NaO4
Appearance: White crystalline powder
Odour: Characteristic vinegar-like smell
Functions: Preservative, acidity regulator, flavour enhancer

Sodium Diacetate is a white crystalline powder with a characteristic vinegar-like smell, a highly effective preservative and acidity regulator for both food and feed. Its specification is built around the acetic acid it carries: free acetic acid 39.0-41.0% and sodium acetate 58.0-60.0%, giving a 10% solution pH of 4.5-5.0. That combination is what suppresses Listeria and Salmonella in meat and mould in bakery, while also acting as a flavour enhancer.

Why buyers specify this grade

Free acetic acid 39.0-41.0% and sodium acetate 58.0-60.0%, a defined ratio rather than a blend of convenience
10% solution pH held at 4.5-5.0 for predictable acidity regulation
Heavy metal content as Pb 0.0002% max
Moisture 2% max, so the powder stays free flowing
One additive serving preservation, pH regulation and flavour enhancement

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Specification

Free acetic acid	39.0 - 41.0%
Sodium acetate	58.0 - 60.0%
Moisture	2% max
pH value, 10% aqueous solution	4.5 - 5.0
Formic acid and easily oxidised substances	0.2% max
Heavy metal content as Pb	0.0002% max

Technical data

Chemical formula: C4H7NaO4
Appearance: White crystalline powder
Odour: Characteristic vinegar-like smell
Functions: Preservative, acidity regulator, flavour enhancer

Quality control

Released against the free acetic acid and sodium acetate ratio, not only on total assay
TDS, MSDS and sample COA available for Sodium Diacetate in the document centre

Where it is used

Preservative in bakery products, extending shelf life of bread and pastries by preventing mould growth
Antimicrobial agent in meat products, inhibiting Listeria and Salmonella
pH regulator in salad dressings, sauces and condiments
Flavour enhancer in chips and processed snacks
Dough conditioner improving elasticity and texture
Mould inhibitor and pH buffer in animal feed
Appetite enhancer for poultry and swine, growth promoter in aquaculture, ketosis prevention in dairy cows

Who buys it

Bakery and meat processors
Sauce, dressing and seasoning manufacturers
Snack food producers
Feed mills and dairy nutritionists

Problems it solves

Mould cutting bread and pastry shelf life before the sell-by date
Listeria and Salmonella risk in ready-to-eat meat products
Feed spoiling in storage from fungal growth
Low feed intake in poultry and swine where palatability is the limiting factor
Ketosis and metabolic strain in dairy cows

Packing and options

Food or feed application confirmed at order
Packing format confirmed at quotation

How it compares

Calcium propionate is the specialist mould inhibitor for bread and gives no vinegar note. Sodium diacetate brings a tangy vinegar flavour that is wanted in snacks and meats, and it regulates pH and enhances flavour at the same time, so it replaces two or three additives where that taste profile suits the product.

Handling and storage

Store dry and sealed, moisture is specified at 2% max and the powder should stay free flowing
In bakery use it against mould growth; in meat use it against Listeria and Salmonella
Allow for the vinegar-like flavour contribution when setting the dosage

FAQ

Sodium Diacetate questions buyers ask

What is the acetic acid content

Free acetic acid 39.0 to 41.0% with sodium acetate 58.0 to 60.0%.

What pH does it give in solution

4.5 to 5.0 measured on a 10% aqueous solution.

Which pathogens does it control in meat

It inhibits bacterial growth particularly against Listeria and Salmonella.

Can it be used in animal feed

Yes, as a mould inhibitor, pH buffer in livestock diets, appetite enhancer for poultry and swine, growth promoter in aquaculture and to support ketosis prevention in dairy cows.

Does it affect flavour

Yes, it contributes a tangy vinegar-like taste, which is used deliberately as a flavour enhancer in chips and processed foods.

Are documents available

Yes, TDS, MSDS and a sample COA are available for Sodium Diacetate in the document centre.

Download TDS, MSDS and sample COA