Nalcool 2000 is a widely used corrosion inhibitor produced by Chemtex Specialty Limited, designed to prevent rust and corrosion in various applications. It functions as a mixed inhibitor, offering multi-metal protection and scale prevention while enhancing system efficiency and life. Nalcool 2000 is effective in automotive and cooling tower applications, addressing corrosion through the formation of a protective film on metal surfaces.

1. NALCOOL 2000
Corrosion Inhibitor

2. Chemtex Speciality Limited is a public limited organization
involved in the manufacturing of a diverse range of Corrosion
Inhibitor products. Among these, Nalcool 2000 stood out as an
effective and most used product that Chemtex manufactures.

3. NALCOOL 2000
An efficient corrosion inhibitor that finds use in many
applications

4. Here, we will get enlightened about Nalcool 2000 and its
applications
But prior to that, we need to have an understanding about how
and why corrosion occurs and the role of corrosion inhibitors.

5. What is Corrosion?
• Corrosion may be considered to be the deterioration of materials,
specially metals, by chemical interaction with their environment.
• It is regarded as the electrochemical oxidation of metal in reaction
with an oxidant such as oxygen
• Corrosion can be concentrated locally to form a pit or crack, or it
can extend across a wide area corroding the surface more or less
uniformly
• It brings about the degradation of the useful properties of materials
and structures including strength, appearance and permeability to
liquids and gases

6. What is Corrosion?
• The consequences of corrosion are many and diverse and the
effects of these on the efficient operation of equipment or
structures are often more critical than the simple loss of a mass of
metal
• Few of the consequences are noted below:
– Reduction of metal thickness leading to loss of mechanical strength
– Reduced value of goods due to deterioration of appearance
– Loss of time in availability of profile-making industrial equipment
– Hazards or injuries to people arising from structural failure or breakdown
– Perforation of vessels and pipes allowing escape of their contents and
possible harm to the surroundings
– Loss of technically important surface properties of a metallic component
– Mechanical damage to valves, pumps, etc, or blockage of pipes
– Contamination of fluids in vessels and pipes

7. How to prevent corrosion?
• Corrosion can be controlled in different ways, of which few are noted
below:-
– Conditioning the metal: This can be carried out in two ways:
• Coating the metal for the sake of interposing a corrosion resistant coating between
metal and environment
• Alloying the metal to produce a more corrosion resistant alloy
– Conditioning the corrosive environment: This can be carried out in two ways:
• By removal of oxygen – Eliminating oxygen can reduce the chances of occurrence
of corrosion
• Applying Corrosion Inhibitors - A chemical additive, which, when added to a
corrosive aqueous environment, decreases the rate of metal wastage
– Electrochemical control : The rate of corrosion reactions may be controlled by
passing anodic or cathodic currents into the metal

8. Corrosion Inhibitors
• Historically, inhibitors manifest a great acceptance as the only way to fight against
corrosion problem in the industries owing to its superior anticorrosive properties.
• Corrosion Inhibitors can be categorized with respect to their chemical nature as
organic or inorganic and the mechanism of action as anodic, cathodic or mixed.
• Anodic inhibitors play its role by forming an oxide film on the metal surface
resulting in a large anodic shift of the corrosion potential.
• This shift force the metallic surface into region of passivation and hence they are
referred to as passivator, whereas cathodic inhibitors slow down the cathodic
reactions to limit the diffusion of reducing ions to the surface of the metals.
• On the other hand, mixed inhibitors work by reducing both anodic and cathodic
reactions.

9. NALCOOL 2000
• Classified as a mixed inhibitor as it exhibits the properties of both anodic
and cathodic inhibitors
• Nalcool 2000 serves to be a multipurpose nitrite based corrosion inhibitor
designed specially for inhibiting rusting or corrosion of metal by the
formation of a passive coating of protective film on the metal surface
• Nalcool 2000 consists of a combination of ferrous and non-ferrous
corrosion inhibitor, scale inhibitor, non-carbonate buffer, dispersant and
leak detection dye
• Nalcool 2000 has a varied range of applications. It is used as -
– Coolant Corrosion Inhibitor
– Cooling Water Corrosion Inhibitor

10. NALCOOL 2000
• Nalcool 2000 underlines many key benefits and features which are as
follows:-
– Multi-metal corrosion protection
– Scale prevention
– Leakage and burst protection
– Saves power more than 30%
– Temperature resistance – 29 deg C to 215 deg C
– Extends system life
– Enhances system efficiency

11. Applications of Nalcool 2000

12. AUTOMOBILES
 Corrosion through electrolysis is a
common problem faced while using
normal coolant.
 Corrosion is identified by leaking
coolant, appearance of black holes
on the heater, etc.
 It can be usually tackled by using
some sort of inhibitor along with the
coolant.
 Nalcool 2000 serves as an
effective corrosion inhibitor that is
used as a Coolant corrosion inhibitor.

13. COOLING TOWERS
 Corrosion and scale are significant
problems in Cooling Towers.
 Requires yearly acidic treatment to
remove scale.
 Industrial cooling tower water
traditionally is treated with chemical
corrosion and scale inhibitors
 Nalcool 2000 serves as an effective
corrosion inhibitor that is used as a
Cooling Water Treatment chemical.

14. Nalcool 2000 – Corrosion Inhibitor is formulated to inhibit
different types of corrosion and is available in various
compositions and pack sizes to suit different industrial
applications