Click to view the Technical Data.  

  Black C - 33
Deep Black Antique for Copper and Brass		  

Black C-33 is a concentrated liquid for producing a deep black color tones on Copper, brass & bronze at room temperature. Black C-33 is used primarily for decorative purposes to produce a deep black color finish.

OPERATING CONDITIOINS:
Concentration: 1 part Black C-33 to 1 part of water.
Temperature: 65º - 75º F.
Time: 10 - 60 seconds by immersion, spray or rag.
Tank: Acid resistant containers (plastic, P.V.C. or Polyethylene)

Color Formation:

Color formation is depended upon time of immersion and concentration of solution. For a dark black finish, dilute the solution with 1 part of water and the immersion time should be 10-60 seconds depending on the desired color.

Surface Preparation:

Parts should be free of grease, alkalinity or acidity when immersed in Black C-33 solution.

  • Clean the part with Cleaner 104.
  • Rinse with water.
  • Immerse pieces in Black C-33 for the time necessary to achieve the desired color. For small parts, stainless steel or plastic baskets should be used and often simple tumbling is enough.
  • Rinse thoroughly with over flowing cold water, to stop chemical reaction.
  • The finish is easily relieved by brushing or by mechanical polishing to produce a variety of antique finishes. To produce a uniformly colored finish, tumble or vibrate the parts in sawdust. Large pieces can be wiped dry or buffed.
  • It is recommended that a clear water base lacquer (e.g. WSL-55) be applied to the coating to provide maximum life.

Bath Maintenance:

Since blackening with Black C-33 is a chemical reaction between the solution and metal surface, the chemical activity will diminish as the solution is used. When the time required to produce the desired color increases, add 5% by volume of Triblack C-33 liquid concentrate.

Caution:

The Black C-33 is a mildly acidic solution. Avoid contact with the skin or eyes. Protective clothing, gloves, and a face shield should be worn when operating. In case of contact, flush skin or eyes with plenty of water. For eyes, call a physician. Black C-33 liquid is poisonous; do not take internally!

The information stated herein is based on information and test we believe to be reliable. The accuracy or completeness thereof is not guaranteed. Since conditions of use are outside our control, user shall, before using, determine the suitability of the product for his intended use and user assumes all risk and liability whatsoever in connection therewith.