RP7408 has excellent anti rust performance


Release time:

2023-09-13

1. Product Introduction

  1. Ash-free anti-rust agent, suitable for various anti-rust occasions that cannot contain metal elements;
  2. Good anti-rust and anti-emulsification performance;
  3. Multi-purpose, can be used in traditional industrial oil, can also be used in metal processing fluid;
  4. It can completely replace anti-rust additives such as ternary acid, decanedioicacid and 1,10-decanedicarboxylic acid;
  5. The addition amount is low, only 0.3-0.5% can be added to achieve a good anti-rust effect.
  6. Recommended for industrial oil, forming oil, cutting oil, metal processing fluid products.

RP7408 Basic Data

Project

RP7408

Detection method

Appearance

Amber clear liquid

Visual inspection

Density (20 ℃,g/cm3)

0.969

ISO3675

Acid number (mg KOH/g)

151.2

ASTM D664

Kinematic viscosity at 40 ℃ (mm2/s)

1055.0

ASTM D445

Solubility in water

Water insoluble

-

Solubility in oil (0.5% at 150N)

100% soluble

-

 

2. Performance test

1. Liquid phase corrosion test

Test concentration: 0.5%RP7408 dissolved in No. 46 base oil

Test environment: Pour 300ml of the liquid to be tested into a beaker and add 30ml of synthetic seawater (refer to ASTM D665 for the configuration method). Stir at 60 ℃ for 24 hours at a speed of 1200r/min to observe the corrosion of steel rods.

Project

RP7408

Blank sample

Photo

Conclusion: The samples with the addition of RP7408 were completely free of corrosion.

 

2. Copper corrosion test

Test concentration: 0.2 RP7408 dissolved in 46 base oil, and 0.2 40% sulfurized olefin added

Test environment: 100 ℃,3 hours

Project

RP7408

Blank sample

Corrosion grade

1b

3a

Photo

Conclusion: RP7408 has good copper corrosion inhibition function.

 

3. Anti-rust performance in metal working fluid

Test formula

Name of raw material

Programme 1

Programme 2

Programme 3

Programme 4

Water

49.7%

49.7%

49.7%

49.7%

Triethanolamine

2.0%

2.0%

2.0%

2.0%

Monoethanolamine

5.0%

5.0%

5.0%

5.0%

AM101

5.0%

5.0%

5.0%

5.0%

Boric acid

5.0%

5.0%

5.0%

5.0%

No. 10 white oil

15.0%

15.0%

15.0%

15.0%

Tall oil

7.5%

7.5%

7.5%

7.5%

C4022

3.0%

3.0%

3.0%

3.0%

460

3.0%

3.0%

3.0%

3.0%

EM07

4.5%

4.5%

4.5%

4.5%

RP7408

0.3%

-

-

-

Sebacic acid

-

0.3%

-

-

Dodecanedioic acid

-

-

0.3%

-

Here we will compare the anti-rust performance of Shanghai Yucheng Chemical RP7408 and traditional anti-rust agent according to the above reference formula, and the above formula modulation is a transparent uniform liquid.

 

 

Test method: Add 5g of cast iron powder into 100ml of 5% diluent (Shanghai residents' tap water, 200ppm calcium and magnesium hard water, 500ppm calcium and magnesium hard water, 800ppm calcium and magnesium hard water), soak for 1 minute, take out and place on filter paper for 24 hours to observe antirust performance.

Contrast of Rust Prevention in Tap Water Environment

 

RP7408

Sebacic acid

Dodecanedioic acid

Blank sample

5%PH

9.54

9.52

9.51

9.55

Photo

 

Anti-rust comparison under 200ppm environment

 

RP7408

Sebacic acid

Dodecanedioic acid

Blank sample

5%PH

9.54

9.52

9.51

9.55

Photo

 

Anti-rust comparison under 500ppm environment

 

RP7408

Sebacic acid

Dodecanedioic acid

Blank sample

5%PH

9.54

9.52

9.51

9.55

Photo

 

Anti-rust comparison under 800ppm environment

 

RP7408

Sebacic acid

Dodecanedioic acid

Blank sample

5%PH

9.54

9.52

9.51

9.55

Photo

Conclusion: RP7408 has excellent rust resistance

 

Product summary:

  1. RP7408 has excellent anti-corrosion performance in pure oil products, and has a good protective effect on copper alloy and ferrous metal;
  2. RP7408 also has excellent anti-rust performance and hard water resistance in metal working fluid, and shows good anti-rust effect in high water hardness environment.