M-640 L is a liquid corrosion inhibiting additive for water and glycol-based heat exchange fluids.It protects ferrous and non-ferrous metals from corrosive contaminants. This product is an excellent replacement for silicates and phosphate/nitritebased/amine compounds. M-640 L is based on an organic-inorganic formulation designed for low level concentrations in field applications. M-640 L contains a unique combination of contact and vapor phase corrosion inhibitors that provide corrosion protection even in partially filled spaces.
Description
FEATURES
• Protects ferrous and non-ferrous metals from corrosion and pitting
• Nitrite, chromate, silicate, and heavy metal free
• Contains contact and vapor phase corrosion inhibitors
• Economical
• Use in low dosages
• Environmentally acceptable
PHYSICAL PROPERTIES
Appearance: Clear yellow liquid pH 8.8-9.3 (1% solution)
Non-volatile Content: 57-67%
Solubility in Water: 100%
Density: 9.2-9.3 lb/gal(1.10-1.11 kg/l)
TEST DATA
ASTM D-1384-87 (Standard Test Method for Engine Coolant in Glassware) for engine antifreeze/coolants treated with M-640 L:
TYPICAL APPLICATIONS
M-640 L is an additive to antifreeze/coolant fluids to replace nitrites, phosphates, amines, and other types of restricted corrosion inhibitors. The final concentration range for M-640 L under operating conditions is 2.0-2.5% by weight.
PACKAGING AND STORAGE
M-640 L is packaged in 5 gallon (19 liter) plastic pails, 55 gallon (208 liter) steel drums, liquid totes, and bulk. It should be stored in a tightly closed container. The shelf life is 24 months.
