Original Operating Manual - ROPA Fahrzeug

9 Schedules and Tables/Plans and Diagrams/Maintenance Slips
9.9.4 AdBlue ® information sheet
AH14.40-N-0001-01A Information regarding usage,
material properties and handling
of AdBlue
Definition
AdBlue is the trade name for the diesel engine NOx reducing
agent AUS32 with the norm designation DIN 70070.
Objectives of AdBlue
AdBlue is used to reduce poisonous nitrogen oxides to water vapor
and elementary nitrogen in the exhaust gas of diesel-powered
vehicles equipped with BlueTec technology.
Chemical characterization and composition of AdBlue
AdBlue consists of chemically pure urea, without addition of
foreign substances, dissolved in demineralized water. The urea
content amounts to 32.5 %. AdBlue is not an additive, but rather
is supplied separately from an additional tank provided for this
purpose on BlueTec technology-outfitted vehicles.
Chemical formula: H2N-CO-NH2
Molar mass (urea): 60.06 g/mol
CAS (Chemical Abstracts Service) No.: 57-13-6
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Handling of fuel and lubricants contaminated by AdBlue
It is important to always ensure that AdBlue is kept separate from
fuels, lubricants and other process materials, such as coolant, engine
oil, gear/transmission oil, fuels, hydraulic fluid and brake fluid,
and that the same containers and catch pans are not used. Even
the tiniest amounts of AdBlue in the coolant circuit are enough to
damage thermostats and temperature sensors. Process materials
that contain traces of AdBlue must not be used further.
Handling of AdBlue contaminated by foreign substances
Individual components of the BlueTec SCR system react very
sensitively to even the smallest traces of impurities in AdBlue.
Therefore when handling AdBlue, it is always necessary to only
use clean containers and catch pans that are dedicated for this
purpose. AdBlue that contain traces of impurities must not be used
further.
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Usage period and storage life
During storage, AdBlue decomposes into ammonium hydroxide
and carbon dioxide and thereby no longer meets the requirements
of the DIN 70070 standard.
If the recommended storage temperature of maximum 25°C is
maintained, then AdBlue meets the requirements of this norm for
at least 6 months after its date of manufacture. If the recommended
storage temperature is exceeded, then this period is shortened.
AdBlue freezes and solidifies at temperatures below -11°C.
If warmed, frozen AdBlue will again liquefy and can be used again
without degradation of quality.
Refer to the Mercedes-Benz Specifications for Operating Fluids
(MB BeVo) for information regarding the maximum permitted
usage period of AdBlue.
Disposal and degradability
AdBlue only poses a low level of danger to water bodies and soil.
It can be further used by microbes and is therefore easily decomposed.
Due to this reason, AdBlue is classified in Germany in the
lowest risk category of water-hazards WGK 1 (German Water
Hazard Classification).
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Chapter 9
Schedules and Tables/Plans and Diagrams/
Maintenance Slips
406
All engines
Marking
Supply pumps for dispensing AdBlue are to be marked with norm
designation DIN 70070 and/or the trade name AdBlue.
Physical and chemical properties of AdBlue
State: liquid
Color: colorless, clear, light yellow
Odor: slight ammonia odor
pH value: 10 (aqueous solution, 10 %)
Crystallization initiation: -11°C
Boiling point/Boiling range: 103°C
Flash point: -
Self-ignition temperature: not self-igniting
Density: approx. 1.09 g/cm3 at 20°C
Viscosity, dynamic: approx. 1.4 mPas at 25°C
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Protection of electrical and electronic components when
handling AdBlue
AdBlue leads to corrosion of electrical and electronic components.
Due to this reason, all electrical and electronic components in
the vicinity must be covered to avoid contact with AdBlue during
performance of any tasks in which AdBlue could leak out.
Storage and packaging
In order to avoid crystal precipitation, it is recommended that Ad-
Blue be stored under normal conditions (optimally at up to 25°C).
In order to avoid negative effects upon the quality due to contamination,
AdBlue should only be handled via storage and filling
systems designed for such purposes. Suitable container materials
include alloyed steel, aluminum, various plastics as well as plasticcoated
metal containers.
Not suited for this purpose are unalloyed steels, copper, coppercontaining
alloys and zinc-plated steels.
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Disposal of smaller quantities:
Due to its easy decomposition, small quantities of spilled AdBlue
can be rinsed away without a problem using copious water.
Disposal of larger quantities:
Disposal of larger quantities of AdBlue must be carried out in compliance
with applicable recovery and disposal regulations.
The applicable waste treatment classification is location-dependent
and is to be carried out in accordance with the European
Waste Catalog (EWC) and/or the German Directive on the List of
Waste Materials (AAV).
Contaminated packaging:
Packaging on which remnants of AdBlue adhere is to be treated as
the substance itself. It is best to empty packaging, clean appropriately
and then introduce into the appropriate recycling waste
channel.
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Regulations
The product does not need to be labeled in accordance with EC directives or respective national laws.
National regulations:
Statutory Ordinance on Hazardous Incidents: not subject to
German Water Hazard Classification: WGK 1, slightly hazardous to water in accordance with German Administrative Regulation Regarding
Water Pollutants (VwVwS)
© Daimler AG, 14 Sept. 2010, G/09/10, ah14.40-n-0001-01a, Information regarding usage, material properties and handling of AdBlue