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Hess - Products
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D - 50/500
Disinfectant
UBA: ( Umwelt Bundesamt) Nr: 38510012 BFR: ( Bundesamt für Risikobewertung) Nr: 200 62 70 BAUA: ( Bundesanstalt für Arbeitsschutz und Arbeitsmedizien) Nr: 27909 - 27913
Manufactured by:
bafry Hess-Products e.K. Soinweg 3 D- 83126 Flintsbach
++49 (0) 8034 707923 ++49 (0) 8034 707964 E-Mail: [email protected]
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Hess - Products
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INDEX PAGE
Product description 3
Technical data 4
Toxicity 5
Product safety 6
Impurities 6
Application fields 7
Advantages and properties of D - 50/500 9
Comparison of hydrogen peroxide - silver - D - 50/500 10
Comparison of chlorine and D - 50/500 11
Comparison of quats and D - 50/500 12
Comparison of peracetic acid and D - 50/500 13
Comparison of disinfectants 14
Recommended proportioning of HESS PRODUCTS 17
Efficiency / antimicrobiological effect 18
Proportioning equipment and field testing methods 19
Handling 19
Transport instructions 19
Storage instructions 20
Handling, Instructions for accidents 20
Empties 20
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PRODUCT DESCRIPTION
D - 50/500 is a mixture of several disinfectants. Hydrogen peroxide is an oxidising
agent which is stabilised with complex substances. Silver ions are added for long-
term efficiency. Hydrogen peroxide and silver ions have a synergetic effect as a
disinfectant. Silver ions have an oligodynamic effect and react as catalysts. The
bactericidic effect of silver ions depends on the covalent or coordinative linking to
the proteins of micro-organisms. These proteins will be inactivated or precipitated.
Due to the good efficiency of D - 50/500 against bacteria, viruses, amoebae,
germs and algae only this product is necessary in all applications of disinfection.
Long storage time can be warranted due to the good stability of the product. The
product is also stable at high ambient or water temperatures. The efficiency
increases with rising temperature.
D - 50/500 has no environmental implications. The primary component hydrogen
peroxide does not contaminate waste water. Only water and oxygen are formed
during its degradation process, and those are harmless by-products.
Both disinfecting components (H2O2 and silver ions) have a synergetic effect. The
germicidal effect is faster and more efficient as with the individual substances.
Through the combined efficiency of the oxidation and the oligodynamic effect a so
called ”two phase product” has been created. In contrast to common
disinfectants, D - 50/500 destroys biofilms. This process is most important with
bacteria and viruses, which have a biofilm as a protective shield. Hydrogen
peroxide oxidises biofilms and silver ions can react with the proteins in micro-
organisms.
Registration number at the Federal Institute of Environment in Berlin: 3851 0012
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TECHNICAL DATA
State of aggregation: Clear liquid without any characteristic odour. In dilution
without taste and odour.
Density: 1.196 kg/dm³
Boiling point: 114°C at 1013 millibar
Freezing point: -51°C
pH: 1.2
Foaming activity: not foaming
Forming of coatings: does not form coatings
Biological degradation: The primary substance hydrogen peroxide has no
waste water implications. Its only degradation products
are water and oxygen.
2 H2O2 2 H2O + O2
Combustion: D - 50/500 is non-combustible. Organic substances like
wood, paper, oil, coal, cotton wool, straw etc. must not
come in contact with D - 50/500.
Corrosion properties: Corrosion-resisting are aluminium 99.5 % (free of iron),
Cr-Ni-steal, e.g. 1.4301, 1.4401, 1.4571, plastics as
polypropylene, polyethylene, polyvinylchloride. Varnish
coatings and lining materials which are used in swimming
pools or storage containers for instance should be tested
in preexperiments.
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Corrosion effects: Concentration: 1 %
Contact Time: 24 h
Temperature: 50°C
Material effective loss of
weight (g/m2/24h)
allowed loss of
weight (g/m2/24h)
aluminium 99.5% 0.37 10
anticorodal 0.53 10
galvanised iron 0.04 30
Cr-Ni-steal (18/8) 0.06 0.5
Surface tension: (Ring method, 20°C)
Concentration mN/m
0.25 % 72
0.50 % 71
1.00 % 71
Acid value (SH): The Soxlet-Henkel (SH) acid value is the number of
millilitres of 0.25 N sodium hydroxide solution required to
neutralise 100 ml of solution using phenolphthalein as
indicator (end point pH 8.3)
Acid value
Concentration Mains water dist.water
0.25 % 0.11 0.03
0.50 % 0.14 0.06
1,00 % 0.19 0.11
Bleaching: Bleaching shouldn’t appear at the recommended
concentrations and at temperatures below 50°C.
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Discoloration: Coatings and lining materials with titanium pigments,
especially with new coatings and lining materials,
discoloration is possible. Precaution is necessary with
white coloured coatings and lining materials. We
recommend on principle to make pre-experiments on
suitable surfaces if discoloration is anticipated.
Degradation: Degradation of D - 50/500 can take place by adding
sodium hydrogen sulfate (NaHSO3).
The reaction is immediate and produces water and
sulphate. A overdose of 10 % is safe.
H2O2 + NaHSO3 H2O + NaHSO4
Example: For the reduction of 100 ml of a 1 % solution of D - 50/500
add 8 ml of a 38 % solution of sodium hydrogen sulfate.
For the reduction of 100 ml of a 2 % solution of D - 50/500 add 16 ml of a 38 %
solution of sodium hydrogen sulfate.
TOXICITY
Please note the warning information on the packaging.
Hydrogen peroxide is classified as relatively harmless according to HODGE and
STEINER, Ind.Hyg.Quar.1949, 10.93-96 CIVO-TNO 03.11.1980 JvH.
LD50 2000 mg/kg.
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PRODUCT SAFETY
The average dose of D - 50/500 for the disinfection of drinking water is 10 mg/l. The
content of silver ions in this dose is 0.005 mg/l.
Some examples of legally allowed maximum contents of silver ions in drinking water
are as follows:
USA, Canada, Russia, Japan 0.05 mg/l
EU 0.08 mg/l
Switzerland 0.10 mg/l
Drinking water treated with D - 50/500 contains, according to the specific directives,
10 - 20 times fewer silver ions than allowed.
The World Health Organisation "WHO" recommends a maximum harmless
absorption of silver ions through drinking water treatment of 180 µg/day (3 l drinking
water/person/day).
With the consumption of 3 l drinking water per day and an average dose of
D - 50/500 of 10 mg/l the absorption is 15 µg of silver. This is 12 times less than the
WHO recommendation.
IMPURITIES
All impurities, especially heavy metals (As, Pb, Hg, Sn, Ni), in D - 50/500 are below
the limit of determination.
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APPLICATION FIELDS
1. FOOD AND BEVERAGE INDUSTRY
Beverage industry
Breweries, mineral water production, fruit juice and lemonade production,
cider production, wine production etc..
Milk industry
Packaging, dairies, cheese-dairies, etc.
Food industry
Canning factories, butchers, bakers, mills, farinaceous paste production,
finished product producers, fish processing, chocolate factories, vegetable
oil and margarine producers, aromas and essence producers etc.
2. AGRICULTURE
Animal farms
Disinfection of stables and slaughterhouses.
3. AIR-CONDITIONERS AND COOLING TOWERS
Disinfection of humidifier, cooling towers, air-conditioners, removal of
algae.
4. HOSPITALS AND PUBLIC BUILDINGS
Hospitals, nursing homes and old-age homes
Disinfection of surfaces, linen etc.
Disinfection of sanitary facilities.
Hotels, restaurants, kitchens, warehouses, schools, showers, lavatories
etc.
5. MEDICINE AND COSMETICS
Surgery
Disinfection of surfaces, equipment, humidifiers, sanitation etc.
Chemical and pharmaceutical industry.
Disinfection of surfaces, production equipment for pharmaceuticals,
perfumes, extracts, colours etc.
6. TOURISM AND HOUSEHOLD
Drinking water, sanitary facilities, camping, hobby, containers for drinking
water and waste water (caravans, ships).
Disinfection of bath rooms, showers, lavatories, glass, carpets etc.
7. SWIMMING POOLS
Private and public pools, hotel pools, thermal baths, whirlpools, fitness
centres, saunas, solar banks etc.
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ADVANTAGES AND PROPERTIES OF D - 50/500
Universal usage
No gaps of effect
Long term effect
No change of taste of treated food
No smell
Efficiency and long time effect remains also at high water temperatures
No forming of resistant micro-organisms
No waste water and environment implications
No toxic effects of the application solution
No carcinogenic or mutagenic effects
No irritation of skin, eyes or respiratory organs with the application solutions
Equipment for measurement and feedback control
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COMPARISON OF
HYDROGEN PEROXIDE - SILVER - D - 50/500
H2O2 Ag+ D - 50/500
Universal usage no no yes
Gaps of effect yes yes no
Long term effect no yes yes
Efficiency against bacteria slow very
slow good
Efficiency against algae few good good
Efficiency against fungi few good good
Prevention of regermination no yes yes
Immediate measurement of the concentration yes no yes
Neutral pH yes yes yes
Light sensibility yes yes insignificant
Temperature sensibility yes yes insignificant
UV sensibility yes yes insignificant
Long shelf-life no yes yes
Efficiency in organic waste water yes no yes
Efficiency against biofilms no no yes
Necessary dose high very high very low
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COMPARISON OF DISINFECTION WITH D - 50/500
AND DISINFECTION WITH CHLORINE
D - 50/500 CHLORINE
Long term effect very long depending on
temperature,
short till medium
Light sensibility practically not medium
Temperature sensibility practically not fast degradation
at rising
temperatures
Neutral pH neutral change of pH of
the treated water
Contact time medium short
Retarded efficiency through organic materials yes yes
Influence of ammonia or urea till 5 mg/l not reaction to
chloramin
Efficiency against algae yes limited
Efficiency against fungi yes limited
Forming of smell no yes
Change of taste no yes
Danger of over dose practically not yes
Carcinogenic/mutagenic no reaction
products yes
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COMPARISON OF THE DISINFECTION WITH
D - 50/500 AND DISINFECTION WITH QUATS
D - 50/500 QUATS
Degradation without residue practically yes no
Foaming no yes
Temperature sensibility practically not few
Rinsing very good bad
Contact time medium at high
temperatures
short, at low
temperatures
long
Coating at higher water temperatures no yes
Protein turbidity and foam deterioration in
contact with beer no yes
Toxicity no yes
Measurement of concentration good bad
Forming of smell no yes
Change of taste no yes
Danger of over dose practically not yes
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COMPARISON OF DISINFECTION OF D - 50/500
AND DISINFECTION WITH PERACETIC ACID
D - 50/500 PERACETIC
ACID
Universal usage yes no
Gaps of effect no yes
Smell practically not biting
Influence on taste, smell and consistence of
food and beverages no yes
Rinsing necessary no yes
Corrosive no yes
Stacking yes limited
Fully automatic feedback-control yes no
Application range of pH 1 - 8 2.5 - 4
Application range of temperature 5° - 95°C 5° - 40°C
danger of
explosion at
temperatures
over 65°C
Neutralisation of waste water no yes
Velocity of killing of germs medium fast
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COMPARISON OF DIFFERENT DISINFECTANTS I
PARAMETERS QUATS PHENOLS ALDEHYDES HALOGENES D - 50/500
Efficiency spectrum grampos.bacteria
fungi, yeast, algae,
lichens, covered
viruses
grampos.bacteria
gramneg.bacteria
fungi, yeast, algae,
covered viruses
grampos.bacteria
gramneg.bacteria
fungi, yeast,
spores, covered
and uncovered
viruses
grampos.bacteria,g
ramneg.bacteria
fungi, yeast,
spores, covered
viruses
grampos.bacteria
gramneg.bacteria
fungi, yeast,
spores, covered
and uncovered
viruses, amoebae,
protozoa, biofilms
Gaps of effect gramneg.bacteria,
mycobacteria,
spores, uncovered
viruses amoebae,
protozoa, biofilms
spores, uncovered
viruses, amoebae,
biofilms
amoebae,
protozoa, biofilms
amoebae,
protozoa, biofilms
__________
pH optimum 5 - 9 2 - 8 4 - 9 5 - 9 2 - 8
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COMPARISON OF DIFFERENT DISINFECTANTS II
PARAMETERS QUATS PHENOLS ALDEHYDES HALOGENES D - 50/500
pH stability 1 - 12 1 - 14 3 - 12 1 - 9 2 - 8
Protein turbidity
and foam
deterioration in
contact with beer
strong not used because
of changes in
colour and taste
not used because
of changes in
colour and taste
strong no
Water hardness
compatibility
bad very good good good very good
Protein capacity bad very good bad bad good
Dirt capacity bad very good unsatisfactory good moderate
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COMPARISON OF DIFFERENT DISINFECTANTS III
PARAMETERS QUATS PHENOLS ALDEHYDES HALOGENES D - 50/500
Surface behaviour surface residues adsorption on
plastics
high vapour
pressure, high air
load in rooms
surface residue very good
Smell no smell intensive stinging intensive no smell
Foam behaviour strong foaming very good bad good very good
Skin compatibility good good in diluted
solutions
skin and eye
sensitive, danger of
sensibilisation
skin and eye
sensitive, as gas
perilous
very good in
diluted solutions
Carcinogen no yes yes yes, reaction
product chloroform
no
Mutagen no till 800 mg/kg no yes yes as reaction
product chloroform
no
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COMPARISON OF DIFFERENT DISINFECTANTS IV
PARAMETERS QUATS PHENOLS ALDEHYDES HALOGENES D - 50/500
LD50 oral, rat 350 - 900 mg/l 1830 - 3000 mg/l 800 - 1700 mg/l > 2000 mg/l
LD50 inhalation 0.59 mg/l air > 60 mg/l
Federal Republic
of Germany
Classification of
water danger
3 1 - 2 1 - 2 2 - 3 0
Stability in diluted
solutions
only short-term, not
reusable
only short-term, not
reusable
only short-term, not
reusable
only short-term,
conditional
reusable
reusable
Temperature
stability
moderate bad bad very bad very good
Corrosion in
dependence of
temperature
at rising
temperatures high
danger of corrosion
no change
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COMPARISON OF DIFFERENT DISINFECTANTS V
PARAMETERS QUATS PHENOLS ALDEHYDES HALOGENES D - 50/500
Biodegration in
sewage disposal
plants
90 % after 5 days 100 % after 3 - 7
days, neutralisation
necessary
good, but
neutralisation
necessary
very good, but
neutralisation
necessary
100 % after 2 - 4
hours
Biodegration
”Closed bottle test”
OECD 301 D
65- 70 %
degradation in 20
days
80 - 90 %
degradation in 20
days
75 - 90 %
degradation in 5 -
10 days
100 % degradation
in 24 hours
Universal usage limited limited limited moderate very good
Measurement of
concentration in
place
not possible not possible not possible very good very good
Fully automatic
proportioning
not possible not possible not possible very good very good
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RECOMMENDED DOSE FOR D - 50/500
Branch Application field Disinfection of
content or surface
Concentration [%]
Food and
beverages
equipment,
CIP,
walls/floors,
bottle washing,
crown corks,
filling
surface
surface
surface
surface
surface
surface
2 %
2 %
2 %
10 ppm
2 %
2 %
Milk industry equipment,
CIP,
walls/floors,
transport vehicles
surface
surface
surface
surface
2 %
2 %
2 %
2 %
Animal farms walls/floors,
equipment,
drinking water
surface
surface
content
5 %
2 %
20 ppm
Fruits, vegetables hors sol,
before harvest,
after harvest
content
surface
surface
20 ppm
1 - 3 %
1 - 5 %
Wine industry equipment surface 2 %
Air-conditioners filters,
pipes
content
surface
30 ppm
1 %
Cooling towers cooler content 20 -50 ppm
Swimming pool private pools,
floors,
against fungi,
sauna
content
surface
surface
content
0 - 50 ppm
2 %
2 %
40 - 60 ppm
Drinking water pipe disinfection,
drinking water
treatment,
wells,
drinking water in
tanks
surface
content
content
content
80 - 120 ppm
3 - 30 ppm
5 - 30 ppm
30 ppm
Chemical and
pharmaceutical
industry
equipment,
walls/floors,
conservation
surface
surface
content
2 %
2 %
20 - 50 ppm
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EXCERPT FROM: D - 50/500 - PRÜFUNG DER
DESINFEKTIONSWIRKUNG, INSTITUT FRESENIUS,
TAUNUSSTEIN, DEUTSCHLAND, JANUAR 1988
(Examination of the disinfection effect, Institut Fresenius, Taunusstein, Germany,
January 88)
Test micro-organisms
Escherichia coli ATCC 11229
Staphylococcus aureus ATCC 6538
Proteus mirabilis ATCC 14153
Pseudomonas aeruginosa ATCC 27853
Candida albicans ATCC 10231
Action
time
5 % 4 % 3 % 2 % 1 % 0,5 % Control
Escherichia coli (4,4 x 109 KBE/ml)
5 min - - - + + + +
15 min - - - + + + n.m.
30 min - - - - + + n.m.
60 min - - - - - + +
Staphylococcus aureus (5,4 x 106 KBE/ml)
5 min - - - + + + +
15 min - - - + + + n.m.
30 min - - - - + + n.m.
60 min - - - - + + +
Proteus mirabilis (6,8 x 108 KBE/ml)
5 min - - - + + + +
15 min - - - - + + n.m.
30 min - - - - + + n.m.
60 min - - - - - + +
Pseudomonas aeruginosa (1,2 x 109 KBE/ml)
5 min - - + + + + +
15 min - - - + + + n.m.
30 min - - - - + + n.m.
60 min - - - - - + +
Candida albicans (1,4 x 188 KBE/ml)
5 min - - + + + + +
15 min - - - + + + n.m.
30 min - - - - + + n.m.
60 min - - - - - + +
- = no growth + = growth
n.m.= not made
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EQUIPMENT FOR PROPORTIONING AND FIELD
METHODS FOR DETERMINATION
MEASURING STRIPES
Range: 0 - 100 mg/l
PROPORTIONING BOX
VARIO-DISPENSER
Range: 0.1 - 2.0 %
1.0 - 20 %
HANDLING
D - 50/500 is completely soluble in water and miscible in water in every proportion.
D - 50/500 no foaming.
D - 50/500 and solutions mixed with water have the same wettability and adhesion
as water.
D - 50/500 no forming of coating on disinfected surfaces.
TRANSPORT INSTRUCTIONS
RID/ADR-GGVG/GGVS-class 5.1/1b
IMDG/GGVSea 5.1/II UN 2014
IATA/ICAO forbidden
UN No. 2014
Original containers have to be transported standing up. On the packaging must be
a distinguishing mark:
UPRIGHT TRANSPORT, THIS SIDE UP!
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STORAGE INSTRUCTIONS
Original container store standing up. Thereby oxygen originating from the
degradation process can escape from the vent of the container.
D - 50/500 can be stored at temperatures between 5°C and 25 °C for at least one
year.
HANDLING, INSTRUCTIONS FOR ACCIDENTS
D - 50/500 is non-toxic but caustic in undiluted condition on skin, mucous
membranes respiratory organs and is also dangerous for the eyes.
During handling D - 50/500 protecting goggles and protecting gloves are
recommended.
After eye contact with D - 50/500 eyes must be rinsed immediately for several
minutes with running water with opened eyelid. After swallowing mouth must be
rinsed immediately with water. Plenty of lukewarm water should be consumed.
A physician must be contacted in all accidents.
Spilled D - 50/500 must be rinsed off immediately with plenty of water. Escaping
D - 50/500 is not dangerous for sewerage or ground water.
EMPTIES
D - 50/500 is delivered in non-returnable containers. Empty containers will not be
taken back.
Our written and verbal recommendations pertaining to special applications are based on
extensive experiments. We advise as to the best of our present knowledge but without
obligation, as application and storage are outside our sphere of influence. Product
descriptions contain no statements on liability for possible damages. For the rest our terms of
delivery and payment apply.
