RP7408 has excellent anti rust performance

Release time:

2023-09-13

1. Product Introduction

Ash-free anti-rust agent, suitable for various anti-rust occasions that cannot contain metal elements;
Good anti-rust and anti-emulsification performance;
Multi-purpose, can be used in traditional industrial oil, can also be used in metal processing fluid;
It can completely replace anti-rust additives such as ternary acid, decanedioicacid and 1,10-decanedicarboxylic acid;
The addition amount is low, only 0.3-0.5% can be added to achieve a good anti-rust effect.
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
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Conclusion: RP7408 has excellent rust resistance

Product summary:

RP7408 has excellent anti-corrosion performance in pure oil products, and has a good protective effect on copper alloy and ferrous metal;
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.