LG201 Neutral Cleaner

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  • Estimated Delivery:May 05 - May 09

We focus on the production of metal cleaning agents, neutral rust removers, and metal coating agents. The metals we can handle include iron parts, aluminum parts, cast aluminum, galvanized parts, magnesium-plated parts, etc.
Product description

ItemDetails
Product NameLG201 Neutral Cleaner
Product OverviewLG201 Neutral Cleaner is an eco-friendly neutral cleaning agent specially designed for copper alloys such as copper, brass and bronze. Through mild but efficient chelation, penetration and emulsification under near-neutral safe conditions, it effectively removes oxide layers (rust, spots), fingerprints, light oil, dust and polishing paste residues on copper surfaces, while providing “zero-corrosion” protection to the copper substrate, preventing discoloration, loss of luster or selective etching (such as dezincification of brass). Free of strong acids, strong alkalis, ammonia and sulfides, it is an ideal choice for precision cleaning, maintenance and high-end surface pretreatment of copper products.
Main IndexAppearance: Colorless transparent liquid
pH: 6–8
Product Features1.Safe & non-corrosive: Near-neutral pH, almost no chemical attack on copper and its alloys, preserving dimensional accuracy and original metallic luster.
2.Efficient oxide removal: Special organic chelating agent dissolves and removes verdigris, copper oxide (black spots) and cuprous oxide (red rust), restoring metal color.
3.Brightness retention: Clean and bright surface after cleaning, no fading or fogging, laying a perfect foundation for subsequent passivation or protection.
4.Eco-friendly: Free of chromates, phosphates, cyanides and toxic substances, no irritating acid mist or ammonia odor in working environment.
5.Easy operation: Usable at room or medium temperature by immersion, suitable for ultrasonic, spray, manual wiping and other processes.
6.Long-lasting corrosion inhibition: Clean surface with short-term anti-tarnish ability after cleaning.
Technical ParametersWorking pH: 7±1
Temperature: Room temperature – 60°C
Treatment time: Spray 3–5 minutes, ultrasonic 40–120 seconds, immersion 3–5 minutes
Make-up concentration: 5–15%
Application ScopeMaterials: Pure copper, brass (Cu-Zn alloy), bronze (Cu-Sn alloy), cupronickel (Cu-Ni alloy), etc.
Contaminants removed: Verdigris, oxide black spots, red rust, fingerprints, dust, light oil, polishing residues.
Processes: Precision immersion cleaning, ultrasonic cleaning, manual brushing, spray cleaning (low foam).
Industries & workpieces: Electrical connectors, plumbing & sanitary parts, musical instruments, handicrafts, coins, radiators, automotive copper parts, historical relic restoration & maintenance, etc.
Post-processes: Passivation & anti-tarnish treatment, electroplating, electroless plating, coating, welding, cleaning before packaging & storage.
Standard Process FlowPretreatment → Neutral Cleaning → Thorough Rinsing → Sealing → Post-treatment / Drying
1.Pretreatment (if needed): For heavy oil, pre-degrease and rinse thoroughly. For severe oxidation, gentle mechanical cleaning (e.g. soft brush) is recommended.
2.Main cleaning (core step): Prepare working solution by ratio, preferably with deionized water for best results. Fully immerse workpieces; use ultrasonic or mild agitation for complex/deep-hole parts. Take out when oxides are satisfactorily removed.
3.Mandatory thorough rinsing: Rinse immediately in running water to stop reaction and remove all residues. Two-stage countercurrent rinsing is recommended, with deionized water for the second stage.
4.Post-treatment & drying: Passivation is strongly recommended for long-term anti-tarnish protection. Dry quickly with clean compressed air or low-temperature oven (< 80°C); avoid air drying to prevent water spots.
Notes & Safety1.PPE: Wear protective gloves and goggles. Avoid prolonged skin contact even though neutral and mild.
2.Process discipline: Ensure no heavy oil film before cleaning; test compatibility for dissimilar metal assemblies; control temperature and time for brass parts to avoid dezincification.
3.Bath management: Solution turns blue/green as copper ions accumulate; replenish or replace when cleaning speed drops. Regularly remove floating oil and bottom sediment.
4.Wastewater treatment: Waste liquid contains copper complexes; treat as heavy-metal wastewater by breaking complexes and precipitation before discharge to meet copper ion standards.
Storage & PackagingPackaging: 25kg/plastic drum, 1000kg/plastic drum
Storage: Store in cool area, avoid direct sunlight and freezing; use as soon as possible after opening
Shelf life: 12 months in unopened original packaging

Two-in-one pre-treatment standard process


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