Google Answers Logo
View Question
Category: Miscellaneous
Asked by: gtlover-ga
List Price: $20.00
Posted: 15 Jul 2002 00:50 PDT
Expires: 14 Aug 2002 00:50 PDT
Question ID: 39676 rust stabilising/stabilisation related to corrosion prevention?
if no, what is the difference between the two.if yes, how are they
2. any idea who is using/selling rust stabilising products in

SINGAPORE?(for metals)
   (in terms of costs savings, long lasting, lessercoatings but better
Answered By: seedy-ga on 15 Jul 2002 05:57 PDT
Rated:4 out of 5 stars
Your three questions are as follows:

1.   Is rust stabilization related to corrosion prevention?
         The answer is yes and no.  

Rust prevention additives are often added to lubricants to prevent
dissolved oxygen from causing pitting or rusting of metals which are
otherwise protected from the atmosphere.

Anti-corrosion paints or coatings are often used to prevent rust by
isolating the surface from atmospheric oxygen.

Rust inhibitors are often checmical scavengers of oxygen or act as
catalyts to remove oxygen from causing rust.

Additives to water solutions to help prevent rust. 

The common forms of rust inhibitors are red lead coatings, metallic
salts particularly those of zinc, and naphthenate compounds.  These
stabilizers are often added to film former coatings to increase their
effectiveness. Film former compounds which can form a "greasy" layer
on metal are silicone, petroleum distallates, grease, or asphalt.

In summary of your question, rust inhibitors can be added to
anti-corrosion products but are not required in many applications.

2.  Which companies are supplying rust inhibitors in Singapore?
A search of the Singapore yellow pages  

listed the following companies as selling rust inhibitor compounds:

Mercury Chemicals Pte Ltd    Category : Chemicals     Address : 14
Fourth Lok Yang Rd Singapore 629710    Contact :   Tel : 6268 3855 
Fax : 6265 9930  Email:

Global Supreme    Category : Chemical Cleaning-Industrial     Address
: 194 Pandan Loop #01-07 Pantech Ind Complex Singapore 128383   
Contact :   Tel : 6776 0822  Fax : 6775 0822  Email:

Best Chemical Co (S) Pte Ltd    Category : Chemicals     Address : 60
Senoko Rd Singapore 758124    Contact :   Tel : 6755 2400  Fax : 6752
8809  Email:

Commercial Supplies (Far East) Pte Ltd    Category : Chemical
Cleaning-Industrial     Address : 3 Tg Penjuru Cres Singapore 608969  
 Contact :   Tel : 6268 4588  Fax : 6268 4788  Email:

International Scientific (Pte) Ltd Category : Water Treatment
Equipment, Service & Supplies Address : Fty 33 Tg Penjuru Singapore
609029 Contact : Tel : 6261 1744 Fax : 6265 9484 Email:

I would also check for marine paints to find supplies of red lead
paint such as:

Oceanic Link Pte Ltd Category : Paint-Whsle & Mfrs Address : 196
Pandan Loop #01-17 Pantech Ind Complex Singapore 128384 Contact : Tel
: 6777 6001 Fax : 6777 9006 Email: URL:

Star Chemical Manufacturers Pte Ltd Category : Paint-Whsle & Mfrs
Address : 4 Neythal Rd Singapore 628571 Contact : Tel : 6265 1118 Fax
: 6268 7796 Email:

Federal Paint Factory (S) Ltd Category : Paint-Whsle & Mfrs Address :
1 Jln Kilang Timor #10-00 Singapore 159303 Contact : Tel : 6390 9960
Fax : 6276 8827
Soon Huat Paints (1949) Pte Ltd Category : Paint-Whsle & Mfrs Address
: Blk 5 Banda St #01-74 Singapore 050005 Contact : Tel : 6220 5644 Fax
: 6222 7719

This list is not meant to be exhaustive.  A few phone calls to ask for
"red lead marine paints" will help you find the products you are

3.    With regard to the "best" products to use which are available in
Singapore, I am not able to evaluate the myriad of products which are
available since its depends on a specfic application rather than a
general "magic bullet" solution.  Some differences among the various
rust inhibition products are as follows:
a)  Zn naphthenate have a high resistant to oxidation and is used as a
rust inhibitor in lubricants oil and may replace lead naphthenate.
b)  RUST PREVENTIVE - compound for coating metal surfaces with a film
that protects against rust; commonly used for the preservation of
equipment in storage. The base material of a rust preventive may be a
petroleum oil, solvent, wax, or asphalt, to which a rust inhibitor is
added. A formulation consisting largely of a solvent and additives is
commonly called a thin-film rust preventive because of the thin
coating that remains after evaporation of the solvent. Rust
preventives are formulated for a variety of conditions of exposure;
e.g., short-time "in-process" protection, indoor storage, exposed
outdoor storage, etc.
c)   RUST INHIBITOR: A lubricant additive for protecting ferrous (iron
and steel) components from rusting caused by water contamination or
other harmful materials formed by oil degradation. Some rust
inhibitors operate similarity to corrosion inhibitors by reacting
chemically to form an inert film on metal surfaces. Other rust
inhibitors absorb water by incorporating it into water-in-oil emulsion
so that only the oil touches the metal surfaces.

d)   The ZDTPs accomplish these improvements by terminating free
radical reactions in engine oils, by decomposing peroxides in engine
oils, and by forming a thin lubricating boundary layer on engine parts
to prevent EP wear. Wear and oxidation inhibition properties are
dependant upon the ZDTP used.

e) The following link contains information about rust and its causes
on metallic surfaces and how various compounds act to prevent rust.

f)  RUST PROTECTION FOR CAST IRON AND STEEL by a balanced combination
of nitrites and nitrates to passivate the metal surface and a berate
buffer system to maintain the pH of the coolant in the mildly alkaline
range to minimize the electrochemical potential of dissolved oxygen to
initiate rust formation.

g)  The US Navy conducts an annual conference (just past) that
discusses the effect of rust and how it can be prevented.

h)  "Red lead pigment in paint has been used as a rust inhibitor for
centuries and is still used extensively in maintenance painting in
industrial situations: e.g. bridges and process plants. The reason for
this is that oleoresinous red lead materials have had an unrivalled
anticorrosive performance on compromised surfaces. Lead chromate
pigments have been used particularly in bright yellows and red
There are well known hazards of lead compounds which are discussed:

I hope this information is valuable to you.  If you need a
clarification of the information provided, please don't hesitate to
ask.  I promise to check the question from time to time (which I
didn't do with the earlier one) to see how I can fully satisfy your
request.  You may rate the information you received in both questions
to help us evaluate the information we are providing and improve our
direction where needed.

Thank you for googling with us...


Request for Answer Clarification by gtlover-ga on 23 Jul 2002 19:36 PDT
With regards to red lead paint which you said it is use in most rust
inhibitors.However, red lead is highly hazadous not only to humans but
also to the enviroment.I would like to clarify are there any rust
inhibitors that are totally ENVIROMENT FRIENDLY and also pose NO
THREAT TO THE USER in the international market or even in the
Singapore market.

Clarification of Answer by seedy-ga on 23 Jul 2002 21:04 PDT
I do have the information to clarify the answer as per your request. 
Unfortunately, I will be away from my computer starting now until late
tomorrow night, Wednesday, July 24th GMT -5hours.  If that timing is
satisfactory to you, I'll post the clarification at that time....There
are rust inhibitors which are "relatively" safe to the environment. 
These are mainly expensive curable coatings and/or zinc compounds.
Patience please!!


Clarification of Answer by seedy-ga on 24 Jul 2002 21:31 PDT
Your request for answer clarification includes the following

"With regards to red lead paint which you said it is use in most rust 

I don't believe I said that in my answer which is as follows:

    "The common forms of rust inhibitors are red lead coatings,
salts particularly those of zinc, and naphthenate compounds.  These
stabilizers are often added to film former coatings to increase their
effectiveness. Film former compounds which can form a "greasy" layer
on metal are silicone, petroleum distallates, grease, or asphalt."

While red lead coatings are a very common form of rust
inhibitors....the metallic salts of naphthenage compounds are commonly
used as well.  These metallic salts have much less threat to public
health and environmental damage.  Silicone itself is also a rather
inert compound which is no treat to human consumption or environmental
damage. (I expect that some will argue that any compound, when used in
large quantities, can damage a very sensitive ecosystem..but generally
the alternates to red  lead are quite safe.)

You will find proprietary claims of "environmental and public health"
safety in manufacturer's websites such as:

If you need further clarification of the information, please don't
hesitate to ask. I'll be out of town for a few days but perhaps
another researcher will add to the answer or I'll be back to work on
any further clarification you require on next Monday...July 29th...

gtlover-ga rated this answer:4 out of 5 stars

There are no comments at this time.

Important Disclaimer: Answers and comments provided on Google Answers are general information, and are not intended to substitute for informed professional medical, psychiatric, psychological, tax, legal, investment, accounting, or other professional advice. Google does not endorse, and expressly disclaims liability for any product, manufacturer, distributor, service or service provider mentioned or any opinion expressed in answers or comments. Please read carefully the Google Answers Terms of Service.

If you feel that you have found inappropriate content, please let us know by emailing us at with the question ID listed above. Thank you.
Search Google Answers for
Google Answers  

Google Home - Answers FAQ - Terms of Service - Privacy Policy