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PRODUCTS > Aqua Sorb
Premium Diaper SuperAbsorbent Polymers
For more than two decades, we have dedicated ourselves
to the manufacture of superabsorbent polymers – and with
great success. The fact that today’s diapers have become
much smaller and thinner – from more than 100 grams in
the 1980s to only 45 grams today – is one of the
achievements that have resulted from the progress we
have made in the development of superabsorbents.
So
effective, it’s like magic
Just a few grams of superabsorbents are sufficient to
store a baby’s urine, making it “disappear.” They can
absorb up to 300 times their own weight in liquid,
forming a gel that traps the liquid and won’t release
it, even under pressure. Our products are also used in
feminine hygiene and adult incontinence products. In
Europe, we manufacture superabsorbents primarily at our
factory in Germany.
We have production plants in the USA, in Greensboro, NC
and Garyville, LA (superabsorbents) and Deer Park, TX
(acrylic acid). In addition, we maintain laboratories
for research, development and application technology in
Germany, the U.S. and China.
Close cooperation with customers
The safety of our superabsorbents is our top priority.
All raw materials and products are subjected to strict
quality inspections. We also collaborate closely with
our global and regional customers to development new
technologies. This enables us to create unique products
that fulfill the wishes and requirements of our
customers.
Absorbent polymers work behind the scenes
In 1986, our company became the world's first
large-scale manufacturer of absorbent polymers. Since
then, thanks to ongoing innovation, we have retained a
top position in the market for absorbent polymers.
Our research efforts center on the marketplace, our
customers and product development. That means we work
with our customers to find solutions to their problems
and to improve their products, because each individual
product requires its own specific type of absorbent
polymers.
Network
Absorbent
polymers consist of a network of hydrophilic polymer
chains. Their primary characteristic is their ability to
absorb liquids and keep them trapped, even under
pressure. That means that unlike sponges, which hold
water only briefly and release it when squeezed,
absorbent polymers turn liquids into gels that trap and
hold fluid. Depending on the type of liquid, the
products can absorb 30 times their own volume. In the
case of desalinated water, they can even hold 500 times
their own volume. Our research department takes
advantage of this basic principle to design special
polymers for different uses. New products and
applications are being called for all the time. Thanks
to ongoing improvements by our researchers, absorbent
polymers are now more effective than ever and can be
found in many different hygiene articles.
Thinner, more lightweight diapers
Fifteen years ago, the absorbent cord in baby diapers
was made of cellulose fibers. For example, a typical
large-size baby diaper in the year 1987 contained 50
grams of cellulose and only two grams of absorbent
polymers. Today, the ratio of the two ”ingredients” is
nearly 1:1. In 1999, a typical diaper contained 18 grams
of cellulose and 15 grams of absorbent polymers. That
means diapers have become thinner and more lightweight.
It also means that the products have assumed the
function previously fulfilled by cellulose. At the same
time, thanks to the increased ratio of absorbent
polymers, the total retention level – the diaper’s
ability to retain fluid – has increased fourfold, from
100 to more than 400 grams of liquid.
Optimal distribution of liquids

As generations of new absorbent polymers have been
developed, our researchers have succeeded in continually
improving their absorbent qualities. In 1986, the most
important feature of these products was the amount of
liquids they could hold. The next generation of
absorbent polymers was not only capable of retaining
fluid, it was also able to keep liquids trapped inside,
even under pressure. In 1996, we succeeded in increasing
the speed with absorbent polymers take on liquids, which
meant diapers could be made even thinner than before. In
1998 our researchers optimized the distribution of
liquids within the diapers. Now the entire absorbent
area of the diaper is used to the fullest, both in
diapers for little girls and for little boys. In order
to do so, we had to teach the polymers a new ”trick”:
they had to ”learn” to build a barrier against
additional fluid by forming a solid gel structure. We
were able to increase the permeability of the gel, so
liquids can be spread out over larger areas of the
diaper, which consists of a mixture of cellulose and
absorbent polymers.
Responsible Care
Added success means added responsibility. For us,
product quality also involves environmental quality.
We
recognize that our leading position in the marketplace
carries with it a high level of responsibility for
conserving the environment. When we develop innovations
and planning production and sales processes, we take
ecological concerns into consideration. We comply with
the Responsible Care initiative of the Chemical Industry
Association. Our activities adhere to the principle of
sustainable development, which for us involves designing
our products and business methods in ways consistent
with the responsibility we carry for generations to come
– that means we respect the natural limits of the
environment without sacrificing essential needs and
comforts. Absorbent polymers fulfill both requirements
of ”sustainable development”. They help reduce packaging
and waste. And their use in hygiene articles contributes
to consumers’ health and the quality of their lives.
In order to make a detailed evaluation of the ecological
effects of our absorbent polymers possible, we have
conducted a "life cycle analysis" that provides much
important information about the entire "life span" of
our products. Of course, the safety of our absorbent
polymers is our number one priority. We comply with
legal safety requirements and we exceed them. We have
set high safety standards for our products and laid them
down in our Code of Practice that we adhere to from the
moment we begin to develop a new product. All raw
materials are subject to strict safety evaluations, and
new products are subsequently evaluated using
alternative toxicological tests.
Our production plants have been certified according to
the international quality and environmental standards
contained in DIN EN ISO 9001 and 14001.
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Product Analysis - Premium Super Absorbent
Polymer |
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SPECIFICATION LIMITS |
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SPECIFIC PARAMETER |
RANGE |
ACTUAL RESULTS |
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Particle Size Distribution: |
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% on 20 mesh |
0.0-2.0 |
1.0 |
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% on 30 mesh |
5.0-40.0 |
23.2 |
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% on 50 mesh |
40.0-75.0 |
48.3 |
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% on 170 mesh |
10.0-40.0 |
26.6 |
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% on 325 mesh |
0.0-3.0 |
0.8 |
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% through 325 mesh |
0.0-2.0 |
0.1 |
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CRC, g/g, sieved |
28.5-35.0 |
34.2 |
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Absorbency Under Load 0.9psi,
g/g, sieved |
18.5 Minimum |
21.0 |
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Absorbency Under Load 0.9psi
after Ball Mill, g/g, sieved |
15 Minimum |
16.0 |
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pH |
5.5
─
6.5 |
6.0 |
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Bulk Density, g/cc |
0.530-0.725 |
0.6 |
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Moisture Content, % |
0.0-2.0 |
0.5 |
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Flowability, 10 mm:sec/100g |
14 Maximum |
12.0 |
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Extractables, 16 hr |
13 Maximum |
9.0 |
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SAP Appearance, Rd Units |
80 Minimum |
>85 |
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Model |
Aqua Sorb
Premium |
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Chemical product
name |
Super Absorbent
Polymer |
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CAS.
No |
25608-12-2 |
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HS
-code |
3906.90.101000 |
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Main
element |
Cross Linked
Sodium Polyacrylate |
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Bulk size(mm) |
Standard |
0.1-0.850 |
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Others |
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Free
Absorbency
(of Distilled
Water) m/m |
325-375 |
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Free
Absorbency
(of 0.9%NaCl),
m/m (≥) |
40-50 |
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Centrifugal
Retention Capacity, g/g |
28-35 |
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Absorption Under
Load,(0.3PSI),g/g |
23-28 |
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Absorption Under
Load,(0.7PSI),g/g |
Tested at 0.9
psi
15-20 |
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Bulk
Density(g/l) |
0.650 |
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PH |
6.5-7.5 |
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Moisture % |
6-7 |
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Particle size
distribution |
≥850µm |
2-5% |
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850-600µm |
20-40% |
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600-300µm |
40-60% |
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300-150µm |
10-40% |
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150-45µm |
1-5% |
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≤45µm |
0-3% |
Aqua
Sorb® MSDS
Section 1a: Manufacturer/Supplier Information
The ARK Enterprises, Inc.
PO Box 725
Peculiar, Missouri 64078
(816) 779-5741
Section 1b: Physical/Chemical Characteristics
Product Name: Aqua Sorb® Premium Diaper Polymer
Synonyms: Starch Grafted Sodium Polyacrylate >99%
Chemical Family: Superabsorbent
Section 2: Physical/Chemical Characteristics
Appearance & Odor:
Off-White color, Granular Powder, Odorless
Boiling Point: N/A
Vapor Pressure & Vapor Density: N/A
Bulk Density: 25-31 lb/f3
Melting Point: N/A
Evaporation Rate: N/A
Solubility in Water: Slightly Soluble
Section 3: Hazardous Ingredients/Identity Information
Hazardous Components:
OSHA PEL - ACGIH.TLV -
Other Components: Respirable particulate (dust)
Recommended Exposure Limit (dust) 0.05 mg/m3
Product Identification
Chemical Name CAS No.
%
Sodium, Lightly Crosslinked
25608-12-2 92 to 98
Water
7732-18-5 2 to 8
Acrylic Acid 79-10-7
<0.08
NFPA/HMIS: Health 1 Reactivity 0
Fire 0 Specific Hazard 0
DOT Class: Not Regulated
Section 4: Fire & Explosion Hazard Data
Flash Point: Not available
Flammable Limits: Not available LEL - - UEL - -
Extinguishing Media: Carbon dioxide, water spray, foam
or dry chemical
Special Fire Fighting Procedures: As with any fire, wear
positive pressure, self contained breathing apparatus in
any closed space when fighting fires along with full
protective coating.
Unusual Fire/Explosion Hazards: Handle as a finely
divided organic powder. Eliminate sources of ignition
such as static discharge, open flames, etc. Maintain
good housekeeping. Provide Adequate ventilation. Under
certain confined conditions, a concentrated fine dust of
this material in air may cause a dust explosion if
iqnited. CAUTION: Material becomes very slippery when
wet.
Section 5: Reactivity Data
Stability: Stable Incompatibility: Strong oxidizers
Hazardous Decomposition or Byproducts: Thermal
decomposition releases CO, CO2, Hydrocarbons
Hazardous Polymerization: Will not occur
Conditions to Avoid: Avoid contact with strong basic
materials such as sodium, sodium hydroxides
Note: Store in cool, dry area and keep container closed
to avoid moisture. Wash hands thoroughly after handling.
Section 6: Health Hazard Data (applies to unused
product)
Route (s) of Entry: Inhalation, Skin, Eyes
Health Hazards: Contact with eyes, skin or clothing may
cause irritation. Care must be taken to minimize
exposure and prevent workplace inhalation of respirable
dust. Respiratory protection is required for exposures
above the recommended level of respirable dust.
Carcinogenicity: None known
Signs/Symptoms of Exposure: Slight irritant symptoms
Conditions generally aggravated by exposure: Respiratory
Ailments
Emergency and First Aid Procedures:
Eyes: Hold eyelides open & flush with water for at least
15 minutes, consult physician
Skin: Wash with soap and water.
Inhalation: Remove to fresh air, consult physician
Ingestion: If large quantities are swallowed, seek
medical attention.
Toxicity: Laboratory rats were exposed over their
lifetimes to a highly respirable; less thatn 10 micron;
socium polyacrylate dust at the following
concentrations: 0.8 mg/m3, 0.05 mg/m3. At the 0.8 mg/m3
concentration local chronic inflammation of lung tissue
leading to tumors was seen in some animals. At 0.2 mg/me
there was evidence of local inflammation of lung tissue
but no tumorigenic response. There were no adverse
effects.
Section 7: Control Measures
Respiratory Protection: If dust is created use NIOSH or
MSHA approved respirator for nuisance dust of this type.
Ventilation: Local exhaust advisable if excessive dust
is created.
Protective Gloves: Not normally necessary but suggested
in cases of open wounds that are not appropriately
protected.
Eye Protection: Safety goggles
Other Protective Clothing or Equipment: Normal work
clothing.
Work Hygienic Practices: Open wounds should be kept
clean and suitably protected.
Section: 8 Precautions for Safe Handling & Use
Respiratory Protection: Use NIOSH/MSHA approved or
equivalent with high efficiency filter for particulate
levels above 0.05 mg/m3.
Ventilation: As appropriate to control airborne dust
levels below the applicable exposure limits.
Protective Gloves: Impervious/rubber
Eye Protection: Safety goggles
Other protective clothing or equipment: None
Work/Hygienic Practices: Good Housekeeping Practices
DISCLAIMER:
These materials are made from natural products and
contain naturally occurring microorganisms. Proper
precautions are advised to prevent infection of open
wounds, inhalation of excessive amounts of dust, and eye
irritation. Normal and proper hygiene practices to
prevent health hazards from any naturally occurring
substance such as soil, bark, plant material, etc.
should be employed. The information contained in all
printed material is provided without warranty of any
kind, express or implied. Information is provided solely
for consideration, investigation, and verification by
the recipients; users should consider this information
only as a supplement to other information gathered by or
made available to them. Users should make independent
determinations of the suitability and completeness of
all information from all sources to assure proper use
and disposal of these materials for the safety and
health of personnel and the environment, and for full
regulatory compliance. The hazard information contained
in the Material Safety Data Sheet (“MSDS”) and elsewhere
is not a substitute for risk assessment under actual
conditions of use. Users have the responsibility to be
and keep currently informed on chemical hazard
information, to design and update their own programs,
and to comply with all applicable international,
federal, state and local laws and regulations regarding
safety, occupational health, right to know,
environmental protection, and any other related
legislation.
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