Recommendations forsafe handling of our fatty amine
based Asphalt products
Redicote®, Rediset® and Wetfix®

Safe handlingThis document is intended to be a general guide to the handlingof the Redicote emulsifiers, Rediset warm-mix additives /compaction aids and Wetfix adhesion promoters product ranges
for road construction. For details on safety issues related to specificproducts, our individual “Material Safety Data Sheets” should always
be consulted.

What is the chemical composition?

Health and safety considerations

The active ingredients in these products
are fatty amines and their derivatives,amidoamines and imidazolines which arealkaline in nature. Some products containadditional chemicals and solvents.

Redicote, Rediset and Wetfix productspresent no danger to operatives if handledaccording to Material Safety Data Sheets andthese recommendations.

24 h emergency phone number
What are the functions?
Redicote emulsifiers are essential in theproduction of emulsions of bitumen in water
which are used for warm or cold paving andother construction purposes.
Rediset warm-mix additives / compaction
aids provide superior workability andcompaction even at reduced mix
temperatures. Rediset additives are alsohigh performance adhesion promotersthat enhance coating of aggregates even if
the aggregates are not totally dry, prevents
moisture damage and extends the life of theasphalt pavement.
Wetfix adhesion promoters improve theadhesive bond between bitumen andaggregate which in turn enhances the longterm performance of the pavement.

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If an emergency occurs you could call theemergency number. They will assist you indoing a first assessmentof the acute health risks and the needof assistance. Once the assessment iscompleted they will give advice
and recommendations.

What are the associated hazards to personnel and environment?

Toxicity

The products are classified as harmful by ingestion.

Skin contact

Most products are classified as irritating to skin but
some are corrosive.
They are skin sensitising through repeated orprolonged exposure.

Eye contact

Most products are classified as corrosive to the eye.

Inhalation

Due to the low volatility of the active ingredients atambient temperatures harmful inhalation of vapour isunlikely to occur under normal conditions.
However, some of the additional chemicals andsolvents are volatile and therefore inhalation should
be avoided.

Flammability

The active ingredients themselves are not classified asflammable.
Some products contain flammable or highly
flammable solvents

Environmental

Most products are classified as hazardous to theaquatic environment.

Biodegradability

Most products are biodegradable but some areclassed as not readily biodegradable.

3What are the hazards associated with
Redicote products in emulsions anddope solutions?

What are the hazards associated with
Wetfix products in binders duringpaving?

It has been shown that the level ofemulsifiers or dope in run-off water arisingfrom paving operations is below the levelthat would be hazardous to personnel or theenvironment.

Although ammoniacal odours may be
detected from vapours arising from hot
paving applications with treated binders,measurements have shown that theconcentrations are below that are hazardous
to health (ref Previa report).

Flammable products should not be used toprepare dope solutions on site as waterbased alternatives are available.

What are the hazards associated with
Rediset products in binders duringpaving?
There may be ammonia type odoursdetected when dosing Rediset during mix
production and during paving operations
but the concentration of these volatilecomponents are well below the range thatare hazardous to health. Proper personnel
protection masks, gloves and clothing should
be worn during handling of these products.

How do I handle the products safely?
Suitable face mask, gloves (see SDS for eachproduct) and protective clothing should
always be worn when handling the products.
The use of contact lenses should be avoided.
Do not eat, drink or smoke in the vicinity ofthe products.
For optimal safety and performance of ourproducts they should be mechanically added
avoiding skin contact and minimizing the riskof splashing. Special care should be taken
if manual addition to hot bitumen can’t beavoided.

What action should be taken in case of contact with personnel?

4Ingestion

Do not induce vomiting.
Seek medical advice.

Skin contact

Remove contaminated clothng and protectiveequipment. Wash skin with 0.5 % acetic acid solution
followed by water or use diphoterine, then soap andwater. Dry clean contaminated clothing and clean
protective equipment before re-use.
Seek medical advice if symptoms appears.

Eye contact

Rinse with 0.5 % acetic acid solution or use diphoterine,
followed by plenty of clean water.
Seek immediate medical attention.

Inhalation

Vacate affected area.
Seek medical advice if there are any prolonged
symptoms.

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What action should be taken in case of
release to the environment?
Spillage should be contained as far aspossible. Products should be collectedusing absorbing materials and disposedof according to local regulations. Alert
appropriate authorities in the event of large
spillage or fire.

How are the products used?
Redicote emulsifiers are dispersed in warmacidic water containing approximately 50% of
desired amount of acid. Once the emulsifier
is dispersed the remaining acid is added
establish the desired pH.
Rediset warm-mix additives /compaction
aids are preferably added to the hot binders
using an in-line dosing system.
Wetfix adhesion promoters are preferablyadded to hot binders using an in-line dosingsystem.
Some paste products need to be heated tobe liquefied.

What should I do with wastepackaging?
All containers should be thoroughly emptied
and drip free before disposal.
IBC’s can be returned to the manufacturer forrecycling – use contact details on containerlabel.
Drums should be disposed of according tolocal regulations.

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How should the products be stored?
To avoid degradation the products should
be stored at ambient temperature in closed
containers. Some products should preferably
be stored at 20°C to maintain in a liquid state.
If solidification has occurred due to cold
storage, liquefaction can be accelerated bywarming.
In the case of bulk or tank storage, werecommend the use of a nitrogen blanket
which prevents the discolouration andslows the breakdown of the product. It
is also recommended to use lowwatt
density heaters in combination with stirringor circulation pumping to prevent local
overheating. Contact our sales representativefor further information.
Contamination with water will cause mostproducts to gel and some to degrade.
Therefore water ingress into storage
containers must be prevented.
Proper storage conditions will ensure thatmost products remain stable for a minimumof three years.

How long can Wetfix adhesion
promoters be stored in hot binders?

How can I check dosage levels afteraddition?

Wetfix products are alkaline and will,
therefore, degrade due to reaction with theacidic components in the bitumen which
reduces effectiveness. The rate of thisdegradation is normally referred to as theheat stability of the system. This is dependent
on the acid value and storage temperatureof the bitumen, and the heat stability of theadhesion promoter.

Some of the Redicotes can be determinedin an aqueous solution by a suitable titration
method for surface active cat ions.

How should products be dosed?

Alternatively, retained treated bitumen
samples may be examined by a standard
stripping test.

Redicote emulsifiers, Rediset warm-mix
additives / compaction aids and Wetfix
adhesion promoters are best added using ametered pump. Wetfix products should be
added in a manner which minimises storage
time in the hot binder where possible inorder to reduce degradation.

It is not possible to determine Wetfix
levels once the treated binder has been
mixed with an aggregate and therefore it isrecommended to confirm by keeping good,
accurate and detailead records of a massbalance.

If necessary addition levels can be accurately
determined by specialised analyticaltechniques using retained samples of treatedbinders.

What materials should be used inequipment?
Mild steel is suitable for all Rediset and Wetfix
products.
Mild steel is suitable for most Redicote
emulsifiers. Some products contain chloride
ions and/or water in which case special
advice should be sought.
PTFE (i.e. Viton C) or polyamide seals or
gaskets may be used.

What materials should be avoided inequipment?
Copper alloys, aluminium, butyl and natural
rubbers will be adversely affected.
The manufacturer’s advice should beobtained.

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All information concerning our products and/or all
suggestions for handling and use contained herein(including formulation and toxicity information) are
offered in good faith and are believed to be reliable.
However, Nouryon makes no warranty express or
implied (i) as to the accuracy or sufficiency of suchinformation and/or suggestions, (ii) as to any product’s
merchantability or fitness for a particular use or (iii) thatany suggested use (including use in any formulation)
will not infringe any patent. Nothing contained hereinshall be construed as granting or extending any licenseunder any patent. The user must determine for itself
by preliminary tests or otherwise the suitability of any
product and of any information contained herein(including but not limited to formulation and toxicity
information) for the user’s purpose. The safety of any
formulations described herein has not been established.
The suitability and safety of a formulation should beconfirmed in all respects by the user prior to use. The
information contained herein supersedes all previously
issued bulletins on the subject matter covered.
Products mentioned are trademarks of Nouryon
and registered in many countries.

nouryon.com

August 2021

Contact us directly for detailed productinformation and sample request
website | nouryon.com/markets/asphalt
email | asphalt@nouryon.com