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Calcium Magnesium Acetate (CMA): Replace the Deicer, not the Structure

Benefits

• Low corrosion: less corrosive than tap water
• Safe for concrete: the safest deicer for concrete
• Excellent inhibitor: reduces chloride corrosion
• Safe for the environment: biodegradable, low toxicity
• Residual effect: requires fewer applications
• Multi-purpose: use straight, with salt, with sand, or as a liquid

Performance

• Works best above 20°F (-7°C)
• Has long lasting effect - better than salt or urea
• Breaks/inhibits bond between snow/ice and pavement
• Creates a dry, powdery snow which improves traction
  

Application

• Apply early in the storm to prevent snow/ice bonding
• First application: Commercial = 15-20 lbs./1000 ft2 (75-100 g/m2)
• Highway = 300-400 lbs./lane mile (20-40 g/m2)
• Wait at least 20 minutes to remove snow/ice
• Re-apply when new snow/ice accumulation shows first tendency to pack (bond)

Environment

• Biodegrades to CO2 and H2O
• Calcium and magnesium increase soil permeability
• Essentially non-toxic to aquatic species
• Poor mobility in soil – unlikely to reach groundwater
• Safe for vegetation
• Does not contain nitrogen, sodium, or chlorides
  

Handling

• May be stored indefinitely if kept dry
• Take care to avoid caking caused by excess moisture
• Excessive handling may cause dustiness

CMA Product Specifications
Composition	Calcium Magnesium Acetate (CMA)
	3:7 Ca to Mg molar ratio
	Hydrated CMA 96% minimum
	Inert Material 4% maximum
Particle Size	Sieve	% Passing
	4	90%
	14	10%
Shape	Hard spherical pellet, or angular asymmetrical granules
Bulk Density	40 lbs./ft3 to 44 lbs./ft3
	(0.65 g/cm3 to 0.79 g/cm3)
Residual Base	Maximum 0.4 meg base/gm
pH	8 to 10 in a 10% solution
Package Size	25 kg (55 Ib.) paper bags
	1000 kg (1 metric ton - 2205 Ib.) Super Sacks
Spalling Effect of Deicers on Concrete

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