We are a leading supplier importer and distributor of BASF tamol make products in India, Gujarat, Vadodara, Vapi, Hyderabad, Chennai, South India, north India
1. Tamol® NN 2406 Tamol® NH 7519
Tamol® NN 2901
Tamol® NN 4501
Tamol® NN 7718
Tamol® NN 8906
Tamolv NN 9104
Tamol® NN 9401
Stabilizers, dispersing agents and precipitants for the chemical and
allied industries
Dispersing agents and auxiliaries for processing and polymerizing
natural and synthetic rubber latex
Technical Information
TI/ES 1122 e
September 2003 (DFC)
Supersedes edition dated October 1991
® = Registered trademark of
BASF Aktiengesellschaft
Tamolா
N types
2. Tamol® N types
Chemical nature The Tamol® N types are condensation products of naphthalenesulphonic
acid. The individual products in the range differ from each other in terms of
their degree of polycondensation, degree of neutralisation and their salt
content.
The Tamol® NN types have a low degree of polycondensation, and
Tamol® NH 7519 has a high degree of polycondensation.
The first two digits of the numeric product code refer to the active content
in percent. The last two digits refer to the sodium sulphate content. The
overall solids content is the sum of the active content and the sodium
sulphate content. All of these figures are approximate.
Properties
The Tamol® N types supplied in powder form are pale brown or deep
brown in colour. The products supplied in liquid form are dark brown.
The most important properties of the Tamol® N types are listed in the table
below.
Tamol® NN NN NN NN NN NN NN NH
2406 2901 4501 7718 8906 9104 9401 7519
Physical form Liquid Liquid Liquid Powder Powder Powder Powder Powder
Solids content % 31 31 45 95 95 95 95 95
Active content % 24 29 45 77 89 91 93 76
Water content % 69 69 54 5 5 5 5 5
(ISO 3733)
Sodium sulphate % 6 1 0,9 18 6 4 2 17
content
Degree of Low Low Low Low Low Low Low High
polycondensation
pH (10% in water) 10 10 10 7 7 10 10 10
Density (23 °C) g/cm3 1.17 1.14 1.23 – – – – –
Bulk density g/l – – – 500 500 500 500 550
Viscosity (23 °C) mPa·s 20 20 80 – – – – –
The above information is correct at the time of going to press. It does not
necessarily form part of the product specification.
A detailed product specification is available from your local BASF
representative.
Solubility Aqueous solutions with a concentration of up to ca. 40% can be prepared
from the Tamol® N types that are supplied in powder form. The products
supplied in liquid form are miscible with water in all proportions.
Compatibility The Tamol® N types are largely resistant to alkalis, acids and salts. They
are anionic, and their compatibility with other anionic and nonionic
substances is good. They can precipitate in the presence of cationic
substances.
The following curves show the relationship between the viscosity of
selected Tamol® N types and temperature.
.
page 3 of 8 TI/ES 1122 e September 2003
3. Viscosity as a function of temperature
(Measured with a Brookfield viscometer at 60 rpm)
Storage The Tamol® N types supplied in liquid form must be protected from frost,
because the solids tend to precipitate at temperatures below 10 °C. They
can be reconstituted by prolonged stirring or heating.
The Tamol® N types supplied in powder form should be kept in tightly
sealed containers and protected from moisture.
Applications
The Tamol® N types are very versatile stabilizers for aqueous dispersions
and emulsions, and for solutions of surfactants and other auxiliaries. They
can be employed as dispersing agents and grinding aids for pigments and
dyes in aqueous media, as laking agents for dyes and as precipitants for
other cationic substances. They also have applications in metal finishing.
All of the Tamol® N types have an excellent dispersing action and they
perform well as protective colloids. They are not surface-active, with the
result that they have low wetting power and very little tendency to foam.
Stabilizing dispersions and The Tamol® N types can be employed in dispersions and emulsions of
emulsions substances such as polymers, resins and waxes to enhance their stability
during processing. If any solids do nevertheless precipitate, the Tamol® N
types ensure that they remain finely dispersed and do not agglomerate.
Pigments and fillers form more stable suspensions when they are mixed
with dispersions or emulsions if they are dispersed in water with the aid of
Tamol® N types before they are mixed.
Grinding and dispersing The Tamol® N types can be used as grinding aids and dispersing agents in
the production of water-dispersible pigments and fillers, pigment slurries,
and other suspensions of particulate solids in water.
200
Viscosity(mPa·s)
100
150
50
0
°C
5 10 15 20 25 30
Tamol®
NN 4501
Tamol®
NN 2406, NN 2901
Temperature
page 4 of 8 TI/ES 1122 e September 2003
4. The Tamol® N types cause a sharp reduction in the viscosity of pigment
dispersions if they are added in the correct proportions. This makes it
possible for highly concentrated slurries to be produced which are much
easier to handle, because they can be pumped more easily and less
energy is required to stir them. The Tamol® N types are highly resistant to
Ca2+ ions, which makes them particularly effective for dispersing calcium
sulphate.
The Tamol® N types can also be used to disperse powder abrasives in
emulsion-type polishes and cleaners.
Pesticide formulations Tamol® NN 8906 and Tamol® NH 7519 are very effective dispersing agents
for pesticides formulated as water-dispersible granules or wettable pow-
ders. They ensure that the active pesticide is dispersed homogeneously
and forms a stable suspension.
Precipitating cationic substances The Tamol® N types can be used as precipitants and laking agents for
basic dyes.
Cleaning and finishing metal The Tamol® N types can be used to enhance the stability and to boost the
soil-suspending capacity of degreasers, spray cleaners and high-pressure
cleaners. Their detergency is often much higher if Tamol® N types are
included in the formulation.
The performance of sealers for anodized aluminium can be improved by
adding 20 – 30% Tamol® N, expressed as a proportion of the salts in the
sealing solution.
The Tamol® N types can also be employed as auxiliary brighteners in
alkaline silver plating baths.
Preventing caking in fertilizers Tamol® NN 8906 can be added to fertilizers that contain ammonium nitrate
to prevent them from caking.
Other ingredients of anti-caking agents include mineral oil, mixtures of
mineral oil and fatty amines, paraffin wax, and polyethylene waxes such as
Luwax® A.
Polymerizing synthetic rubber The Tamol® N types, especially Tamol® NN 9104 and Tamol® NN 4501,
can be added to the mixture of surfactants employed in emulsion poly-
merization processes for synthetic rubbers such as styrene-butadiene
rubber. They prevent emulsions from coagulating.
Processing rubber latex Tamol® NN 9104, Tamol® NN 9401 and Tamol® NN 4501 can be employed
in natural and synthetic rubber latex as dispersing agents for pigments
and fillers and as vulcanising agents. They help to improve the physical
and chemical stability of rubber latex. The onset of the increase in viscos-
ity that occurs during the pre-vulcanization process can be delayed by
adding Tamol® N types.
page 5 of 8 TI/ES 1122 e September 2003
5. Safety
We know of no ill effects that could have resulted from using the Tamol® N
types for the purpose for which they are intended and from processing
them in accordance with current practice. According to the experience
that we have gained over many years and other information at our dispo-
sal, the Tamol® N types do not exert any harmful effects on health, pro-
vided that they are used properly, due attention is given to the precautions
necessary for handling chemicals, and the information and advice given in
our safety data sheets are observed.
Handling The usual safety precautions when handling chemicals must be observed.
In particular, safety glasses and a respirator must be worn when large
quantities are being handled and no air extractor is available.
Note
The information submitted in this publication is based on our current
knowledge and experience. In view of the many factors that may affect
processing and application, these data do not relieve processors from the
responsibility of carrying out their own tests and experiments; neither do
they imply any legally binding assurance of certain properties or of suit-
ability for a specific purpose. It is the responsibility of those to whom we
supply our products to ensure that any proprietary rights and existing laws
and legislation are observed.
page 6 of 8 TI/ES 1122 e September 2003
