Water Based Rust Inhibitor P141

RLT-P141 is an eco-friendly water soluble corrosion inhibitor compounded with long-chain polycarboxylic acid and organic amine. It contains no phosphorus, boron or nitrite, fully miscible with water to form clear diluted solution. Designed for carbon steel, cast iron and alloy steel, it provides reliable temporary anti-rust protection during machining and equipment maintenance.

Key Features

1. Ultra low dosage achieves Grade 0 anti-rust performance for cast iron, 168h immersion without steel corrosion or discoloration

2. Unlimited water solubility, stable clear solution at any dilution ratio

3. Thin passive film leaves minimal residue, easy to remove via water or solvent cleaners

4. Excellent hard water tolerance, no precipitation in unsoftened tap water

5. Nitrite-free eco formula, simple waste liquid disposal

Typical Physical & Chemical Index

Application Fields

This phosphorus boron nitrite free water based rust inhibitor can be formulated into all water-based metal treatment fluids:

• Synthetic & semi-synthetic metalworking cutting fluids

• Ready-to-use aqueous inter-process anti-rust liquid

• Auxiliary inhibitor for dewaxing cleaners & passivation sealing agents

• Emulsified anti-rust liquid, industrial antifreeze, water quenching fluid, water-borne anti-rust coating

Application Scenarios

• CNC ferrous parts inter-process flash rust prevention

• Finished steel castings long-term indoor storage protection

• Anti-rust raw material for cutting fluid manufacturers

• Degreasing & one-step anti-rust additive for metal cleaning agents

• Corrosion auxiliary for water glycol hydraulic antifreeze & quenching liquid

• Temporary rust protection for machine tool cast iron fixtures during shutdownCompatible Metals: Carbon steel, cast iron, alloy steel (Not for Al, Cu, brass)

Operation Guide

• Dilution ratio: 0.2%–2.0%, increase dosage for high humidity & long storage demand

• Temperature: Room temperature available; mild heating speeds drying, boiling prohibited

• Treatment method

  (1): Immerse parts for 2–5 mins

  (2): Full surface spray for at least 2 mins

• Pre-treatment: Remove all rust, oil and scale before anti-rust operation

• Post-treatment: Air dry or low bake to form compact passive film

• Storage rule: Keep treated parts away from sewage and rainwater

FAQ

Q1: What environmental advantages does RLT-P141 have?

A1: It is phosphorus, boron and nitrite free, meets global chemical export standards and simplifies wastewater treatment.

Q2: What is the minimum effective concentration?

A2: Only 0.5% dilution reaches Grade 0 cast iron anti-rust standard; general dosage 0.2%–2.0%.

Q3: Can it be added directly into synthetic cutting fluid?

A3: Yes, usable for pre-formulation or tank-side top-up to eliminate workpiece flash rust.

Q4: Does it work with hard tap water?

A4: Yes, no salt precipitation or performance loss in high-hardness water.

Q5: Is the residual film hard to clean?

A5: The ultra-thin film can be fully cleaned by water or solvent degreasers.