Harcros Antifoam 8820 Food Grade

Harcros Antifoam 8820 Food Grade is a 20% active emulsion of polydimethylsiloxane formulated to control foam in both food and industrial processing. This defoamer is readily diluted with water or process liquids for easy addition to foam-generating solutions. It efficiently controls foam in nonionic, cationic, and anionic systems over a wide pH range.

Ingredient Name: Polydimethylsiloxane

Functions: Anti-Foaming Agent, Defoamer

Chemical Family: Silicones, Siloxanes

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Identification & Functionality

Chemical Family
Ingredient Name
Agrochemical Functions
Cleaning Ingredients Functions
Cosmetic Ingredients Functions
Food Ingredients Functions
Industrial Additives Functions

Features & Benefits

Benefit Claims
Agrochemicals Features
CASE Ingredients Features

Applications & Uses

I&I Cleaning Applications
Industrial Additives End Use
Product Applications

Suggested applications include:

  • Meat and poultry processing
  • Fruits and juices
  • Pickles
  • Rice processing
  • Potato washing
  • Soft drinks
  • Instant coffee, and other food processes or products requiring an effective foam control agent
Diluting the Antifoam

This product is readily dispersible in warm or cold water with gentle agitation. For best results, mix one part of antifoam with 2-12 parts sterilized water or other diluent and stir gently until completely mixed. If it is necessary to store the diluted material, continuous mild agitation is recommended to ensure uniform product.


Physical Form
White liquid
Dispersible in
Warm or cold water with gentle agitation
Typical Properties
ValueUnitsTest Method / Conditions
Weight (at 25°C)8.3lbs/gal-
Flash Point93.3°CPMCC
Viscosity (at 25°C)800 - 1500cps-
Specific Gravity (at 25°C)1.0--
pH (at 1% aqueous Solution)4.0 - 5.0--

Regulatory & Compliance

Regulatory Information

Federal Regulation Compliance

  • Antifoam 8820 FG is approved for use as a direct food additive under FDA 21 CFR 173.340 at levels up to 10 ppm active silicone (50 ppm AF 8820 FG) in the finished food, with 0 ppm allowed in milk,where food standards permit.
  • In addition, AF 8820 complies with 21 CFR 175.105, 176.170, 176.180, 176.200, 176.210, 177.1200, 177.2260, 177.2800 and 178.3120 for use as an indirect additive in the manufacturing of food processing components and food contact surfaces.
  • It is also cleared as a tolerance exempt inert ingredient under formulations applied to growing crops or raw agricultural commodities after harvest.

Technical Details & Test Data

Processing Guidelines
  • Antifoam 8820 FG can be used as received or pre-diluted with water or other process liquids before use.
  • Concentrations from 5 to 100 ppm are sufficient for foam control in most systems. In testing to determine the most effective working concentrations, a good starting point is to add 10 parts of antifoam per million parts foamer.
  • In direct food applications, adjust concentration to comply with FDA regulations as explained under regulatory status.

Storage & Handling

Shelf Life
12 months
Storage & Handling Information
  • This product exhibits excellent storage stability when proper handling procedures are followed. As with most emulsions, storage in a cool dry place (60-75°F) in tightly-closed containers will provide maximum shelf life. Under these conditions, shelf life is 12 months minimum.
  • Product should be protected from freezing. Repeated freezing may damage container and may cause thickening or separation of emulsion. If freezing occurs, allow to thaw, mix thoroughly and use the emulsion as usual.