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Donplast® CN30

Corrosion inhibiting admixture for reinforced concrete

Donplast CN30 is a calcium nitrite based concrete admixture which acts as a corrosion inhibitor for steelreinforced concrete. Donplast CN30 contains a minimum of 30% of calcium nitrite.

Donplast CN30_TDS_4.pdf
Donplast CN30_SDS.pdf
  • Extends the working life of reinforced concrete structures.
  • Compatible with other admixtures.
  • Recommended for all types of steel-reinforced concrete in environments that have exposure to chlorides or de-icing salts.
  • Protects against steel corrosion in reinforced concrete.

Donplast CN30 is available in 5 gal (19 litre) containers as well as 275 gal (1,041 litre) and IBC totes. Bulk supply in tanker trucks is also available upon request.


Donplast CN30 has a shelf life of 12 months from date of manufacture if stored at temperatures between 50°F and 95°F (10°C and 35°C).
Donplast CN30 should be kept at above 46°F (8°C). If crystals form, material should be stored at room temperature and agitated thoroughly to return to normal state.
Protect from direct sunlight


The recommended dosage of Donplast CN30 is 2.0 – 6.0 gal/yd³ (10 - 30 liters/ m³) of concrete, depending on the
chloride exposure conditions.


Donplast CN30 complies with the requirements of Specification for Chemical Admixture for Concrete ASTM
C494 as a Type C admixture.