Classification
Product TypeIngredient
Product FormLiquid (Aqueous Solution)
Industry PositionFood Additive (Food Improvement Agent)
Market
Sodium lactate (INS 325; E 325) is a globally traded food additive, commonly supplied as a colourless, transparent aqueous solution meeting jurisdictional specifications. Under Codex GSFA, it is permitted under GMP in multiple food categories and is used for functions including acidity regulation and humectancy. Commercial supply is linked to industrial lactic acid availability because sodium lactate is prepared by neutralizing lactic acid with sodium hydroxide. A central market dynamic in international trade is regulatory/specification alignment across import markets (e.g., Codex/JECFA and EU specifications) and managing category-specific restrictions such as infant food limitations in some jurisdictions.
Specification
Physical Attributes- Typically supplied as a colourless, transparent liquid; odourless or with a slight characteristic odour (E 325 specification references a 60% aqueous solution).
Compositional Metrics- EU E 325 specification (60% aqueous solution reference): assay 57% to 66%.
- EU E 325 specification: pH 6.5 to 7.5 (20% aqueous solution).
- EU E 325 specification: limits include acidity (as lactic acid, after drying) ≤0.5%, and heavy metal limits (e.g., lead ≤2 mg/kg; mercury ≤1 mg/kg; arsenic ≤3 mg/kg).
- JECFA sodium lactate (solution) monograph (60% w/w reference): assay expressed relative to labelled amount (95% to 110% of labelled amount).
Grades- Codex Alimentarius (INS 325) GSFA provisions (GMP use in listed categories).
- FAO/WHO JECFA specification for Sodium Lactate (solution) (INS 325).
- EU specifications for E 325 in Regulation (EU) No 231/2012.
ProcessingUsed for multiple technological functions (e.g., acidity regulator, humectant, emulsifier, thickener) as listed in Codex GSFA for INS 325.
Supply Chain
Value Chain- Lactic acid supply -> neutralization with sodium hydroxide -> sodium lactate solution -> specification/contaminant testing -> bulk distribution to food manufacturers
Demand Drivers- Use as acidity regulator and humectant (Codex GSFA functional classes for INS 325).
- Use as pH control agent and humectant (U.S. 21 CFR §184.1768 conditions of use under GMP).
- Need for additive specification compliance (e.g., meeting E 325 specification parameters in Regulation (EU) No 231/2012) to support cross-border trade.
Risks
Regulatory Compliance HighSodium lactate is regulated as a food additive and its permitted uses, functional classifications, and specifications vary by framework (e.g., Codex GSFA/JECFA, EU E-number specifications, U.S. GRAS regulation). Trade disruptions can occur if a shipment fails to meet required specification parameters or documentation expectations in the destination market.Contract to an explicit specification (e.g., JECFA/EU parameters), maintain full CoA/traceability documentation, and pre-check destination-market permissions for intended food categories and use levels.
Infant Food Restrictions MediumSome regulatory frameworks include special restrictions or cautions for infant foods (e.g., U.S. regulation does not authorize sodium lactate for infant foods and infant formulas; JECFA notes restrictions related to D(-) or DL forms in infant foods). This can create compliance risk for products targeting infant/young-child categories.Implement product-category controls in formulation approvals and verify infant/young-child category permissions before export or product launch.
Food Safety MediumAs a direct food substance used under GMP, sodium lactate must meet purity and contaminant limits (e.g., heavy metals) and be fit for intended use; non-conforming lots can trigger import rejection, recalls, or downstream manufacturing disruption.Use qualified suppliers, require routine contaminant and identity testing aligned to EU/JECFA specifications, and audit change-control for raw materials and processing aids.
Input Availability MediumSupply depends on upstream lactic acid availability because sodium lactate is manufactured by neutralizing lactic acid with sodium hydroxide; upstream disruptions can tighten availability for downstream food manufacturers.Qualify multiple suppliers and regions, and maintain contingency approvals for alternative lactate salts where technologically acceptable.
FAQ
How is sodium lactate produced commercially for food use?In the U.S. GRAS regulation, sodium lactate is described as being prepared commercially by neutralizing lactic acid with sodium hydroxide.
What functional roles does Codex GSFA list for sodium lactate (INS 325)?Codex GSFA lists sodium lactate (INS 325) with functional classes including acidity regulator, antioxidant, bulking agent, emulsifier, emulsifying salt, humectant, thickener and related functions shown in the GSFA entry.
Are there notable restrictions for sodium lactate in infant foods?Yes. The U.S. regulation for sodium lactate states it is not authorized for use in infant foods and infant formulas, and the WHO JECFA database notes that neither D(-)-lactic acid nor DL-lactic acid should be used in infant foods.
What are key specification parameters for E 325 sodium lactate in the EU?EU specifications for E 325 sodium lactate in Regulation (EU) No 231/2012 include an assay range (57% to 66%), a pH range (6.5 to 7.5 for a 20% aqueous solution), and contaminant/purity limits such as heavy metal limits.