Health and Safety Recommendations for Hourdex Multi Use Binder by St Astier

See Also: INTERCROMEX Data Sheet

Product and Manufacturer Identification


Intercromex is a ready mixed mortar based on natural hydraulic lime, cement, siliceous and calcareous sand, additives.


Intercromex is not classified as a " Dangerous Product" as defined in annex VI of the directive 67 / 548 / CEE. However, because of its alcaline properties in solution, some handling precautions are necessary.

Risk symbol

Principal risks for people and the environment







  • Intercromex is irritant for eyes, respiratory track and mucous membranes.
  • Risk of severe eye damage in cases of splashes of powder or wet mortar in the eyes
  • Once hydrated, Intercromex increases alcalinity and therefore can irritate or dry the skin
  • In cases of significant ingestion Intercromex is caustic for the digestive tract. It can cause burning of the mouth, esophagus and stomac
  • Intercromex does not present particular risks for the environment subject to the recommendations in section XIII and the respect of national or locad disposal directives

First Aid (Urgent Cases)

Contact with eyes
  • Wash immediately and abundantely with clean water and consult an ophtalmologist
Contact with the skin In case of prolongued contact with the skin:
  • If Intercromex is in a dry state, eliminate as much as possible the dust. Wash abundantely with clean water
  • If Intercromex is in a wet mortar state, was abundantely with clean water
  • Make sure that no product is left between skin and clothing or accessories (watches, shoes etc…).
Inhalation In case of inhalation of large amounts of Intercromex in dust form::
  • Bring the affected person outside the dusty area
  • Consult a doctor in case of respiratory problems.
Ingestion In cases of significant ingestion of Intercromex
  • Wash mouth, drink water and consult a doctor.


Intercromex is not flammable.
In case of nearby fire use any extinguishing agents (as required by the nature of the fire)


Individual precautions
  • Avoid all contacts with the eyes
  • Avoid contact with the skin
  • Avoid dust inhalation
  • In case of airborne dust use the appropriate anti dust mask
  • Handle the product with the appropriate gloves
Protection of the environment
  • Do not dispose of Intercromex in sewers, drains and on surface waters
Cleaning and recovery methods
  • Use adequate collecting methods so as to avoid the creation of dust in the air.
  • After collection, Intercromex can be disposed as normal building waste.
  • Intercromex hardens approximately 60 to 90 minutes after mixing with water.


  • Keep away from the reach of children
  • Avoid creating airborne dust. If unavoidable, wear an anti dust mask
  • Avoid direct contact of Intercromex with eyes, skin and mucous membranes
  • Wearing security glasses is recommended.
  • The handling of Intercromex bags has to be done in such a way as to avoid the creation of airborne dust
  • Observe health and safety Manual Handling directives


Exposure control:

Exposure Limits

Total Dust Limit: 10 mg/m3
Air bourne dust limit: 5 mg/m3

Individuals' protection:

Respiratory protection : In the presence of airborne dust, the use of an anti dust mask is recommended
Hand protection Wear appropriate gloves
Eyes protection: Wear protective goggles in case of airborne dust or risk of splashes of powder or wet mortar
Skin protection: Wear adequate work clothing covering the arms and extend it to the hands by wearing gloves. If working standing on knees, wear knee pads. Skin protective creams can also be used.


Colour Grey Powder
Odour None
PH in water solution Alcaline between 12 and 13
Fusion temperature > 1000oC
Apparent volumetric mass 1.35 g/cm3 at 20°C
Explosion point Not applicable
Flammable point Not applicable
Danger of Explosion None
Granulometry 20% to 30% of fines < 80µ


Stability The product is stable
Conditions to avoid Humidity can cause the hardening of the product
Materials to avoid None
Dangerous decomposition products None


Inhalation: Intercromex can cause irritation of the respiratory track and inflammation of nasal mucous membranes. In extreme cases the erosion of mucous membranes is possible
Ingestion: In cases of significant ingestion Intercromex is caustic for the digestive tract. It can cause burning of the mouth, esophagus and stomac
Skin contact:

Due to its alcalinity in solution, Intercromex can irritate the skin

Contact with the eyes Intercromex can cause irritation and severe lesion of the pupil. Prolongued washing and ophtalmologic consultation are recommended
Chronic hands, skin disorders Prolongued exposure without adequate protection (gloves) can cause dermatitis.
Cancer risks: Not found
Genotoxicity: Not found


Mobility: None
Potential bio-accumulation: None
Ecotoxicity: In case of accidental dispersion in waters, the Intercromex powder could moderately increase the water pH


After hardening, as a mortar waste, Intercromex can be disposed of together with other construction site waste and stockpiled in discharge sites following the regulations valid at the time of disposal.


Intercromex is classified as non hazardous merchandise in accordance with transport regulations.


Risk Symbol Xi irritant
Principal Constituent Calcareous sand, NHL lime and cement
Phrases R:
  • R36/37/38- irritant for the eyes, respiratory ways and the skin
  • R41 - risk of severe lesion to the eyes
Phrases S:
  • S2 - keep away from childrens’ reach
  • S24/25 - avoid contact with skin and eyes
  • S26 - in case of contact with the eyes wash immediately and abundantely with clean water and consult a specialist
  • S37 wear adequate gloves
Professional illnesses: Social security code : not applicable
Special medical surveillance: Not envisaged


The recommendations in this document are based on our kowledge as it stands today related to Natural Hydraulic Limes, sands and additives. They are given in good faith.

Under no circumstance the information can be considered as a quality guarantee.

The User attention is drawn to the eventual risks caused by the utilisation of a product for different purposes from the ones for which the product has been envisaged. It is the responsibility of the User to adopt the appropiate safety measures and to apply all regulations current at the time of use. The prescriptions contained in this document are given to help the User to fulfill its obligations. The precautions listed cannot be considered as exhaustive.

See Also: Intercromex Data Sheet

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For further Guidance, contact your St Astier Distributor.
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