NALTIC Industrials, LLC

Oakite® Deoxidizer LNC

A Product of BASF Chemetall
Non-Chromated, Liquid Acidic Material for Deoxidizing and Desmutting Aluminum and Aluminum Alloys

Available Size:
4 gal [50555350 ]
55 gal [50555357 ]

Primary Application

Deoxidizer LNC is a non-chromated, acidic material for removing oxides, alkaline etching smut and discoloration from aluminum and aluminum alloys. It is used before chromate conversion coating, non- chrome conversion coating, anodizing, electrical resistance welding, and other operations that require a very low level of surface contamination.

It performs well in hard water, requires no heat, deoxidizes rapidly and rinses freely. Deoxidizer LNC meets Boeing Process Specification BAC 5765, Cleaning and Deoxidizing Aluminum Alloys, and can be used to meet the requirements of SAE-AMS-W-6858, Welding, Resistance: Spot and Seam.



Chemical composition Blend of iron salts, nitric acid and fluoride
Physical form Dark reddish-brown liquid
Specific Gravaty 1.48 at 20 °C (68 °F)
Normal working concentrations 10 to 20% by volume
Normal working temperature Ambient: 50 to 100 °F (10 to 38 °C)
pH 1.0 at 10% by volume
Approvals: Deox LNC meets Boeing Process Specification BAC 5765 [as Solution 29], Cleaning and Deoxidizing Aluminum Alloys, and can be used to meet the requirements of SAE-AMS-W-6858, Welding, Resistance: Spot and Seam. Application Procedure: Surfaces should be clean and free of organic contaminants. Immerse in a 10 – 20% by volume solution of Oakite Deoxidizer LNC at ambient temperature. Immersion time is normally 1 – 5 minutes. Process parameters will vary depending on the age of the bath and the degree of smut, oxidation or other contaminant on the surface. The solution should be air agitated. Rinse thoroughly in clean ambient temperature water. A bath of Deoxidizer LNC has an etch rate on alloy 2024-T3 aluminum that ranges between 0.03 and 0.10 mils/surface/hour, depending upon the age and concentration of the bath. Solution Control: Deoxidizer LNC should be monitored and replenished on a regular basis, for example daily, by the ferric iron titration, Gardotest Procedure 25. On a less frequent basis, for example weekly or monthly, Deoxidizer LNC should be monitored and replenished by the total acid titration, Gardotest Procedure 150. Ferric Iron (Gardotest Procedure 25): 1. Place a 5 mL sample of the bath into an Erlenmeyer flask. 2. Add about 50 mL of deionized water. 3. Add 30 – 40 drops of Gardotest Indicator 195 (Sulfosalicylic Acid). The color will turn dark red. 4. Titrate with Gardotest Solution 90 (0.10 M Versene) until the color turns yellow. 5. Percent by volume Deoxidizer LNC may be calculated by multiplying the milliliters used by 1.1 Total Acid (Gardotest Procedure 150): 1. Place a 10 mL sample of the bath into an Erlenmeyer flask. 2. Add about 100 mL of deionized water. 3. Add about 10 mL of Gardotest Solution 10 (Potassium Fluoride). 4. Add 5 – 10 drops of Gardotest Indicator 2 (Phenolphthalein). 5. Titrate with Gardotest Solution 37 (1 N Alkali) until the solution turns from colorless to pink. 6. Percent by volume Deoxidizer LNC may be calculated by multiplying the milliliters used by 2.4 Replenishment: Normal replenishment, based on the ferric iron titration is with additions of Deoxidizer LNC. As the bath is used, the total acid of the Deoxidizer LNC solution tends to decrease. For each percent by volume based on total acid, below the percent by volume based on ferric iron, add 9.5 gallons of Gardobond Additive H 7140/1 per 1000 gallons of bath. Equipment: Automatic Control: The Chemetall Oakite Electrodeless Conductivity/Concentration Control System and Chemical Metering Pump can be used to monitor and automatically maintain the concentration of this product using conductivity. Please contact the Chemetall Oakite Process Equipment and Engineering Department for specific recommendations. NOTES ON USE (see Safety Data Sheet) Tanks, piping and equipment should be constructed of alloy 316L stainless steel or lined with polypropylene, CPVC, PTFE (Teflon) or PVDF (Kynar) or other material as approved by the equipment manufacturer. Elastomer for pump and valve seals etc. should be Viton. Keep concentrate away from combustible, organic and readily oxidizable materials. Avoid prolonged contact of concentrate with glass, ceramic or concrete. If contact is made, rinse surface thoroughly with water. Avoid contact or mixing with chlorine-releasing materials. Safety and Handling: Prior to handling and use of any of the materials referenced in this document, the Safety Data Sheets should be read and understood by all personnel in contact with these materials. KEEP OUT OF REACH OF CHILDREN Disposal: Any disposal of the materials referenced in this document should be in accordance with all applicable federal, state, providential and local regulations. The process solution can contain components other than those present in the materials as supplied. Analysis of process solutions may be required prior to disposal. Storage: Dry indoor storage at temperatures between 40 and 100 °F (4.4 and 37.8 °C) is recommended, away from any incompatible materials referenced in the Safety Data Sheets. All containers should be tightly closed when not in use. DOT Shipping: 4 GALLON PAIL UN 2922 DOT shipping name of material: Corrosive liquid, toxic, n.o.s. Technical name: (NITRIC ACID, HYDROFLUORIC ACID) Hazard class: 8 (6.1) Packing group: II Commodity weight: 52.16 lb HazMat packing type: PLASTIC PAIL Type DOT label(s): CORROSIVE. POISON This 4 gallon pail cannot be transported UPS or FedEx ground without special poison permits and packaging.  We can only ship this LTL. We cannot ship this product any other way. SUGGESTION OF OTHER PRODUCTS YOUR COMPANY MAY USE  • CLEANERS • ETCHANTS • DEOXIDIZERS • RUST PREVENTIVES • METALWORKING FLUIDS (coolants and lubricants) • WASTE WATER TREATMENT CHEMICALS • FLOOR CLEANERS AND MAINTENANCE PRODUCTS • PROCESS EQUIPMENT/CONTROL SYSTEMS DISTRIBUTED BY NALTIC INDUSTRIALS AN AUTHORIZED DISTRIBUTOR FOR THE USA Chemetall US, Inc. (“Chemetall”) warrants that products described within its official technical papers will conform with its published specifications. The products supplied by Chemetall and information related to them are intended for use by buyers having necessary industrial skill and knowledge. Buyers should undertake sufficient verification and testing to determine the suitability of the Chemetall materials for their own purpose. Since buyer’s conditions of use of products are beyond Chemetall’s control, Chemetall does not warrant any recommendations and information for the use of such products. CHEMETALL DISCLAIMS ALL OTHER WARRANTIES INCLUDING THE IMPLIED WARRANTY OF MERCHANTABILITY AND FITNESS FOR ANY PARTICULAR PURPOSE IN CONNECTION WITH THE USE OF ITS PRODUCTS. Please contact us directly for a complete and official Chemetall Technical Data Sheet and/or MSDS in PDF.Contact us: Office (888) 891-0077 email: Headquarters NALTIC Industrials, LLC 299 S Main St Suite 1300 Salt Lake City, UT 84111 USA