ASCOTRAN® L is a water-based organic concentrate corrosion inhibitor designed for both ferrous and non-ferrous metals. It serves as a complete replacement for oil-based preventives, ideal for indoor protection of metal equipment and components.

Chemical Name: Triethanolamine (TEA)

CAS Number: 102-71-6

Chemical Family: Amines

Labeling Claims: Borates-free, Boron-free, Molybdate-free, Nitrite-free, Non-Flammable, Not Listed In California Proposition 65, Organic, Phosphate-free, Silicate-free

Certifications & Compliance: DNV GL Certified, ISO 9001, SARA 313

Synonyms: 2-(Bis(2-hydroxyethyl)amino)ethanol, 2,2',2''-nitrilotris(ethanol), Nitrilo-2,2',2''-Triethanol, Nitrilotriethanol, TEOA, Triethanolamine, Tris(2-Hydroxyethyl)Amine, Tris(Beta-Hydroxyethyl)Amine, Tris(Β-Hydroxyethyl)Amine, Trolamine

Technical Data Sheet

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Identification & Functionality

Chemical Family
Chemical Name
CASE Ingredients Functions
Cleaning Ingredients Functions
Fluids & Lubricants Functions
Product Families
Chemical Nature

Aqueous preparation made of organic acid salts and azole derivatives.

Features & Benefits

Labeling Claims
Fluids & Lubricants Features
HII Features
Product Features
  • Added to metal working solutions, it also protects metals during short or long immersion periods.
  • Fully water-soluble liquid, safe to apply.
  • Protects ferrous and non-ferrous metals.
  • Prevents flash corrosion on steel.
  • Forms a hydrophobic film on the metal surface, which can be coated over with conventional paint systems.
  • Free of bore, phosphate, molybdate, silicate or nitrite.
  • Exclusively made of authorized substances for food-contact cleaners (according to decree of 08/09/99).
  • Meets PMUC standard requirements.

Applications & Uses

Compatible Substrates & Surfaces
Fluids & Lubricants Type
Fluids & Lubricants End Use
Home Care Applications
I&I Cleaning Applications
Use Level
2 - 15% (Temporary Protection), 0.05 - 0.2% (Hydrostatic Tests), 0.7 to 2% (Other Applications)
Typical Application

Mainly used for:

  • Synthetic or semi-synthetic hydrosoluble lubricants and metal working fluids
  • Hydrosoluble hydraulic fluids
  • Coolants or anti-freezes.
  • Temporary protection of metal equipment or components
  • during transport and dry storage.
  • Protection from flash corrosion during hydro blasting.
  • Protection of metal equipment during hydrostatic test procedures.
  • Protection of metal equipment in long-term contact with a static aqueous solution: pipes during inactivity periods, tanks, and containers.

Can also be used in :

  • Other solutions for metal machining (degreasing, stripping, polishing, cleansing under pressure).
  • Neutral-to-alkaline detergents.
Product Application

The pH of the end solution needs to be above 7 for an optimal efficiency.

Metalworking fluids
The Ascotran-L is added into water-soluble lubricants concentrates or ready-to-use solutions to get a final dosage of 50 to 5000 ppm, depending on the formulation, its pH, and the metal nature to protect.
Temporary protection
The Ascotran-L can be applied by spraying, dipping after being diluted into water, or inside the last metal working bath (washers, rinsing tanks). Dosage from 2 to 15% depending on the required protection duration.
Hydrostatic tests
The Ascotran-L is diluted into the water used for the test, at a dosage between 0.05 and 0.2% depending on the metals to protect and the test duration.
Other applications
The Ascotran-L is mixed into water-based solutions at a dosage between 0.7 to 2% depending on the solution nature and metals to protect.


Physical Form
Soluble In
Yellow to amber limpid liquid
Stable in
Hard Water
Immiscible In
Isopropanol, White-Spirit
Miscible in
Water, Ethanol, Glycols, Acetone (up to 20%)
Soluble in
Typical Properties
ValueUnitsTest Method / Conditions
Density (at 20°C)1.11 - 1.15--
Viscosity (at 20°C)600 - 800cPs-
pH Pure (at 20°C)8.4 - 9--
Freezing Pointmax. 0°C-
Foaming PowerVery Low--

Regulatory & Compliance

Certifications & Compliance
Chemical Inventories

Technical Details & Test Data

Performance Data

Flash Corrosion Protection
Method: DIN 51360/part2

Performance in different media
ASCOTRAN® L - performance Data - 1

A comparative study with competitors :
Medium : deionized water
Competitors A and B : liquid corrosion inhibitors

ASCOTRAN® L - performance Data - 1

Protection against atmospheric corrosion
Method : climatic chamber, 25°C, 100% of humidity
Substrate : mild-steel immersed few minutes in tap-water containing the inhibitor.

Max exposure time without corrosion of the substrate

% in Ascotran-L 0% 2% 5% 10%
Test duration without corrosion on mild-steel <24h 100h 150h >200h

Protection during immersion
Minimal protection duration of metal specimens immersed into tap-water at room temperature :

% in Ascotran-L 0 % 0.05% 0.10% 0.20% 0.30%
Mild-steel  <1d 1 week 1 week  18 m  36 m
Aluminium 99%  3d  4m  4m  4m  12m
Copper 99%  3d  9m  9m  36m  36m
Brass  30d   36m  36m  36m  36m

Method IP329: weight loss measurement of the metal specimens immersed into deionized water, at 45°C, during 4 months. 

Specimens Independently :
ASCOTRAN® L - performance Data - 1

Specimens Together (Galvanic Protection) :
ASCOTRAN® L - performance Data - 1

Packaging & Availability

Packaging Type
Packaging Information
  • Plastic pail of 30kg net.
  • Metal drum of 200kg net.
  • IBC of 1000 kg net.

No specific condition for transport. Weight and packaging size (off-pallet) :

  • Pail : 1.5kg - Ø30, H50
  • Drum : 15kg - Ø60, H90
  • IBC : 70kg - L120, l100, H120

Storage & Handling

Shelf Life
2 Years
Storage and Shelf Information
  • Ideal temperature conditions: 0 to 30°C.
  • Exposure: avoid direct exposure to sunlight.
  • Expiration: 2 years in its original sealed drum, in the storage conditions described above. With time, the colour of the product may turn darker, but it does not modify its properties.