DEQUEST® FSAdditives for NTA and EDTA replacement in Industrial & Institutional Cleaning
DEQUEST® FSAdditives for NTA and EDTA replacement in Industrial & Institutional Cleaning
2 3
Compared to aminocarboxylate in general
(including NTA1 and EDTA2), DEQUEST® FS exhibit:
• Scale inhibition at threshold level
• Superior dispersion and chelant properties.
• Superior hard surface cleaning and bleach stabili-
zation.
• Better tox properties compared with NTA and EDTA
• Superior Heavy metal (transition metal) complex-
ation
Compared to traditional phosphonates, DEQUEST®
FS provides
• Increased flexibility to tailor properties to formula-
tion needs
• Enhanced calcium tolerance
• Improved threshold scale inhibition at high pH
• Higher solubility in caustic
• Cost efficiency
What are DEQUEST® FS?
DEQUEST® FS are specialty phosphonates solutions
designed for Industrial & Institutional applications
What do DEQUEST® phosphonates?
DEQUEST® FS phosphonates are highly stable organic
chelating and scale control agents which form stable
soluble complexes with metal ions. They prevent water
hardness ions (Ca++ and Mg++) and other trace metal ions
from hindering the efficacy of cleaning agents. On top of
their protecting role, phosphonates participate to the
cleaning process by loosening and dispersing the dirt. Of
special interest is the capability of phosphonates to
prevent scale deposit while formulated at low level. This
ability to control scale formation at sub-stoichiometric
level is known as threshold scale inhibition.
Unlike aminocarboxylate and polycarboxylate chelants,
selected phosphonates have the ability to protect bleach
from decomposition by trace metal ions.
Why DEQUEST® FS?
DEQUEST® FS have been selected to steadily answer the
need for a quick solution for the challenging reformulation
work that many I&I product manufacturers have to face in
order to replace NTA.
DEQUEST® FS properties
DEQUEST® FS exhibit, among others, enhanced calcium
tolerance, scale inhibition and bleach stabilization over a
wide pH range.
Three proprietary DEQUEST® FS have been developed to
fit the broad composition range of I&I formulations.
DEQUEST® FS 0520 DEQUEST® FS 0531 DEQUEST® FS 0536
Concentrated caustic X
Mild to High pHX
(Particulate and greasy soil removal)
X(Bleach stabilization and
bleachable stain removal)
Use patern of Dequest® FS for NTA replacement. For detailed advice, the Italmatch technical expert team is keen to help upon request (request through www.dequest.com or Italmatch sales rep)
1Nitrilotriacetic acid2Ethylenediaminetetraacetic acid
DEQUEST® FS are specialty phosphonates that have been developed to provide best in class ready to use solutions
for I&I products
The DEQUEST® FS series exist out of different products that have been especially designed to fit the broad range of pH
and chemical composition of I&I cleaners.
DEQUEST® FSAdditives for NTA and EDTA replacement in Industrial & Institutional Cleaning
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Detergent for commercial automatic dishwashing
High pH, high temperature and short contact time are the
challenging conditions found in professional dishwashing.
As a consequence, special attention has to be paid to the
scale formation inhibition that is favoured in this harsh
environment.
To answer solubility issue that may be found at high pH
with traditional phosphonates and control the high scale
formation potential under professional dishwashing
operating conditions, DEQUEST® FS 0520 has been
developed.
Bleach stabilization and stain removal (tea, coffee, wine,
grease…) are also provided by DEQUEST® FS 0536
complexation of free and stain entrapped metal ions.
DEQUEST® FS contribute to soil dispersion in order to have
spotless shiny dish.
Red wine removal of a solution of 10% EDTA (top left - 40% active), 10% NTA (bottom left - 40% active) and 2.6% DEQUEST® FS 0536
(right) indicate a better stain removal with DEQUEST® FS 0536 at 1/4 of the EDTA/NTA dosage
Presoak, detergent and rims cleaner in car wash
Beside pH and surfactants, chelants are one of the most
important ingredient of car wash chemistry. While
traditional chelants provide metal sequestration,
DEQUEST® FS help the traffic film removal (presoak and
detergent), grease cleaning (rims cleaner) and disperse
the soil for oustanding results. Additionally, DEQUEST® FS
effectively bind water hardness ions in the rinse stage
to provide a spotless finish. DEQUEST® FS 0520 is
suitable for concentrated high pH formulations while
DEQUEST® FS 0536 provides a cost effective approach.
DEQUEST® FS 0536 2.6%
Water NTA 10%
Hard water spots removal from metalliced paint (car body piece) demonstrates superiority of DEQUEST® FS 0536 over NTA (40 % active NTA).
DEQUEST® FSAdditives for NTA and EDTA replacement in Industrial & Institutional Cleaning
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Hard surface and in-place cleaners
Hard surface and in-place cleaners cover a wide range of
applications and corresponding operating conditions. The
selected DEQUEST® FS are suitable to cover the full range
of operating conditions and contribute significantly to the
cleaning power of these formulations while protecting
bleaching agent, helping the sanitization process and
preventing corrosion of metallic surfaces. The boost in
grease, cooked food and burned soil removal that is
brought by DEQUEST® FS is of special interest for
application such as all purpose and oven cleaners. Finally,
the sequestering properties of DEQUEST® FS help film and
spotting prevention (i.e. for bottle washing).
DEQUEST® FS 0520 is the most appropriate to provide
corrosion inhibition to aluminium and mild steel surfaces
(i.e. tank and pipe) and to be used in high pH conditions.
DEQUEST® FS 0536 is appropriate for oxygen and
hypochlorite containing formulations.
Detergent and alkalinity booster in laundry
Standard wash processes in professional and institutional
laundries rely on bleach, temperature and/or high pH to
get spotless and disinfected linen. DEQUEST® FS grades
help stain removal while preventing fiber and heating
element encrustation and early bleach decomposition
that may occur in such conditions. DEQUEST® FS 0520 is
the most suitable for alkaline detergent and alkalinity
booster. DEQUEST® FS 0531 provides outstanding
encrustation prevention while DEQUEST® FS 0536 exhibits
through the wash oxygen bleach stabilization (i.e. water
peroxide and peracetic acid).
Dequest® FS 0536 2.6% Dequest® FS 0531 9.1%
NTA 10% Dequest® FS 0520 5.4%
Burned grease removal on tile demonstrating superiority of DEQUEST® FS over NTA (40% active NTA) at reduced dosage (cleaning solution containing 2 % MEA, 2 % non ionic surfactant – pH adjusted to 11).
AppEArANCE pH “AS IS” (± 1) DENSITy @ 25ºC (±0.05)
ACTIvE CoNTENT(±2)
DEQUEST® FS 0520 amber liquid 5 1.35 32 %
DEQUEST® FS 0531 amber liquid 11.1* 1.31 22 %
DEQUEST® FS 0536 Amber liquid 2 (max)* 1.36 50 %
*1 % solution
ITAlmATCH USA
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ITAly (EUrOPE/AFrICA/mIDDlE EAST CUSTOmEr
SErvICE CENTEr)
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Tel: +39 02 93525237
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More informationIf you would like to obtain more detailed information about DEQUEST® products or are interested in obtaining a
sample for evaluation in your system, please contact your nearest Italmatch Chemicals S.p.A. representative or visit
our website: http://www.dequest.com
DEQUEST® FSAdditives for NTA and EDTA replacement
in Industrial & Institutional Cleaning
The information in this bulletin is to the best of our knowledge true and accurate but all instructions, recommendations or suggestions are made without guarantee. Since the conditions of use are beyond their control, Italmatch Chemicals S.p.A. and its subsidiaries disclaim any liability for loss or damage suffered from use of these data and suggestions. Furthermore, no liability is accepted if use of any product in accordance with these data or suggestions infringes any patent.