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Chemical Name: Magnesium Hydroxide
Function: Flame Retardant, Smoke Suppressant
Chemical Family: Magnesium & Magnesium Compounds
Labeling Claims: Halogen-free
Synonyms: Magnesia hydrate, Magnesium dihydroxide, Magnesium hydroxide (Mg(OH)2), Magnesium(II) hydroxide, Milk of magnesia
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TypeDocument Name
Technical Data Sheet
HYDRAMAX™ M5 Series Technical Data Sheet
HYDRAMAX™ M5 Series Technical Data Sheet
Technical Data Sheet

Knowde Enhanced TDS

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Identification & Functionality

HYDRAMAX™ M5SV Features & Benefits

Applications & Uses

  • Hydramax™ M5SV series of magnesium hydroxide products are a non-halogen flame retardant with low smoke properties. Its high endothermic decomposition temperature allows it to be used in a wide range of polymers.
  • Hydramax™ M5SV series is used to help meet smoke and flammability tests such as ASTM-E84, UL-94, ASTM-E662, UL 910, ASTM D2863, ASTM D3843 and NFPA 263.


Typical Properties
ValueUnitsTest Method / Conditions
Magnesium Hydroxide Content99.8%-
Particle Size (D50)0.6 - 2--
Surface Area44292m²/g-
Surface Treatment

Silane (Aminosilane)

Regulatory & Compliance

Safety & Health

Health and Safety

The use of proper protective equipment is recommended. Excess exposure to the product should be avoided. Wash thoroughly after handling. Store the product in a cool dry, well ventilated area away from incompatible materials. For additional handling and toxicological information, consult the Polymer Additives Group Safety Data Sheet.

Packaging & Availability

Packaging Type

Standard packaging is in 20 kg bags and 500 kg bulk bags. Packages are on skids with stretch wrap. Special packages are available upon request.

Polymer Additives Group