Food Grade Chemicals

🧪  What are food-grade chemicals?

These are chemical substances produced and purified for use in foods, beverages, supplements, food packaging, or products that come into contact with food.

➡️ Typical examples:

• Citric acid, lactic acid, ascorbic acid (vitamin C)
• Sodium bicarbonate, calcium carbonate, phosphates
• Preservatives (sodium benzoate, potassium sorbate)
• Thickeners and gums (xanthan, guar, carrageenan)
• Natural or synthetic colors and flavors
• Sweeteners (erythritol, maltitol, purified stevia)

These emissions are called “food grade” because they meet the purity, safety, and traceability standards defined by regulatory agencies — for example:

• FDA (USA)
• EFSA (European Union)
• ANVISA (Brazil) — RDC No. 45/2010, RDC No. 776/2023, etc.

⚖️ Difference between “technical grade,” “pharmaceutical grade,” and “food grade”

Grade Type Main Use Typical Purity Notes
Technical/Industrial Processes, Cleaning, Laboratory Variable (low control) May contain impurities unsafe for ingestion. Never use in food.
Food Grade Food, beverage, and packaging production High (≥ 99% depending on the compound) Manufactured under hygienic standards, traceable, safe for consumption.
Pharma Grade Medications and supplements Very high (≥ 99.9%) Subject to even stricter controls; can be used in food, but is more expensive.

👉 In summary: all food chemicals are pure and safe for human consumption (when used in permitted doses), but not all pure chemicals are automatically “food grade.”

🕎 Relationship with Kosher Certifications

Many food chemicals also receive religious or ethical certifications, such as Kosher, Halal, or Vegan, because the origin of the raw materials and the manufacturing process may violate religious restrictions.

For example:

Substance Potential Risk Kosher Observation
Stearic acid / stearates May come from animal fat. Requires kosher supervision; vegetable versions are preferred.
Glycerin / Glycerol May be animal or vegetable. Kosher only if vegetable or synthetic and supervised.
Gelatin Animal origin (beef, pork, fish) Only kosher if from fish or bovine kosher with supervision.
Emulsifiers (E471, E472) Fat blends Require certification.
Acids and salts (citric, ascorbic, phosphates) Usually of vegetable/synthetic origin, usually kosher, but still require formal approval.

🧰 4. How to identify a “food-grade” product

When purchasing (even for home or artisanal use), check the label, technical data sheet (MSDS or SDS), or packaging for the following:

“Food quality/food grade”

Manufacturer’s name and production batch

Purity (% content)

Compliance with ANVISA/FDA/Codex Alimentarius

Expiration and storage data

Quality certification (ISO 22000, HACCP, Kosher, Halal, etc.)

Example of a correct description:

“Anhydrous citric acid – food grade, purity ≥ 99.5%, Kosher and Halal certified, according to FCC/E330.”

🧴 Examples of uses in food and beverages

Category: Example of chemical functions
Preservatives: Sodium benzoate, potassium sorbate. Inhibits fungi and bacteria.
Acidity regulators Citric acid, sodium phosphate Control pH and flavor.
Antioxidants Ascorbic acid, tocopherols Prevent oxidation of fats and vitamins.
Thickeners/stabilizers Xanthan gum, pectin, carrageenan Improve texture and characteristics.
Leaving agents Sodium bicarbonate, phosphates Produce CO₂ in cakes and breads.
Colors and flavorings Beta-carotene, curcumin, malic acid Improve appearance and flavor.

⚠️ Uncontained and stored precautions

Even though they are food-grade, these chemicals:

Must be stored in a dry, clean place, away from strong odors.

Cannot be mixed with cleaning or technical products.

Always use precise measurements—excess can alter the flavor or cause undesirable effects.