T.C. 259   
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Deburring Compound
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T.C. 259

PRIMARY APPLICATION

T.C. 259 is a powdered acidic compound for barrel finishing, deburring (with or without abrasive media), and descaling. It removes heat scale and discoloration from steel stainless steel, brass and copper parts and brightens their surfaces.

CHEMICAL CHARACTERISTICS

Chemical composition Mixture of organic and inorganic acids with an inhibitor
Physical form As received: dark brown powder
As used: light brown solution
Odor Slight amine odor
Specific gravity Not applicable
Bulk density 10.0 lbs/gal
Viscosity Not applicable
Flash point None
Hygroscopic tendency None
Foaming tendency Moderate
Recommended diluent Water
Maximum solubility 10 oz/gal at 70°F
Behavior in hard water No effect
Rinseability Good
Biodegradable No
Phosphate-free Yes
Normal working concentrations 1 to 4 oz/gal of water
Normal operating temperatures Room temperature (50° to 100°F)
PH at working concentrations to 11.0 to 1.5 at 70°F

Effect of working concentrations on metals Rate of metal loss from one-hour immersion is T.C. 259 - 4 oz/gal at 70°F as follows:
 

Metal Inched per Year Description
Brass .002 Negligible
Stainless .002 Negligible
Steel .003 Negligible
Copper .003 Negligible
Aluminum .284 Moderate
Zinc .376 Moderate
Magnesium .500 Attacks

APPLICATION PROCEDURE

T.C. 259 is used at room temperature (50 to 100°F), 1 to 4 oz/gal with or without abrasive media. Exact concentration, temperature and barrel time will depend upon the degree of cleaning, descaling or deburring required. Because it dissolves quickly, T.C. 259 can be added to the barrel in concentrate form.

Solution Control: Titration factor is 7 mi. using Procedure 4.

NOTES ON USE

T.C. 259 is a highly acidic material and proper handling precautions should be observed. Use acid-resistant solution tanks and barrels.

If T.C. 259 is used in a closed barrel, the barrel should be vented to allow for gas release.

After tumbling in solutions of T.C. 259, steel parts should be neutralized in a Tru-Chem Company, Inc. alkaline solution.

DISPOSAL

Neutralize before discharging into sewage system.

PACKAGING

Packaged in non-returnable fiber drums of 450 lbs. net.

SHIPMENT

May be shipped by any common carrier. Freight classification is "Cleaning Compound, NOIBN, Powder".

STORAGE

Suitable for general indoor storage

Freight classification is "Cleaning Compound".

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