Optus Block Sealer

Description

Optus Block Sealer is an air-drying sealer for block paving.

Composition/information of ingredients

Chemical nature: Approximately 25% aqueous dispersion of a copolymer based on n-butyl acrylate and methyl methacrylate.

Hazards indentification

None.

First aid measures

• General advice: remove contaminated clothing.
• If inhaled: keep patient calm, move to fresh air and summon medical help.
• Skin contact: wash thoroughly with soap and water.
• Contact with eyes: wash affected eyes for at least 15 minutes under running water with eyelids held open. Consult an eye specialist.
• Ingestion: immediately rinse mouth and then drink plenty of water, summon physician.

Fire fighting measures

Suitable extinguishing media: water spray, dry extinguishing media, foam, carbon dioxide (C0²)

Accidental release measures

After spillage:

• large quantities should be pumped into containers, soak up remainder with absorbent material.
• small spillages can be swilled away with water. Waste water must be disposed of correctly.

Handling and storage

• Handling: no special measures necessary
• Storage: protect against freezing

Exposure controls and personal protection

Components with workplace control parameters

N-butyl acrylate, cas-no. 141-32-2 Acrylamide, cas-no. 79-06-1 Methyl methacrylate, cas-no. 80-62-6 N-butanol, cas-no. 71-36-3 Methanol, cas-no. 67-56-1

When used as intended the limit values concerned are not reached.

Refer to the current edition of hse guidance note eh 40 on occupational exposure limits (united kingdom).

This product should be considered when making any assessment under the uk control of substances hazardous to health regulations (coshh) and amendments (united kingdom).

Personal protective equipment

• Eye protection: goggles

General safety and hygiene:

• Hands and face should be washed before breaks and at the end of the shift.
• Avoid contact with the eyes and prolonged skin contact.

Physical and chemical properties

• Form: liquid
• Colour: white
• Odour: faint aromatic
• Solidification temperature: 0^oc (water)
• Boiling point: 100^oc (water)
• Explosion limits: upper none, lower none
• Flash point: n/a
• Ignition temperature: n/a
• Vapour pressure: (20^oc) 23 mbar (water)
• Density: (20^oc) approximately 1.02g/cm³ din 53 217
• Solubility in water: miscible
• Ph value: (23^oc) 7.5-9.0 din 53 785
• Viscosity: (23^oc) 500-1300 mpa. S (100 e-1) din 53 019

Stability and reactivity

• Thermal decomposition: no decomposition if used correctly.
• Hazardous reactions: no hazardous reactions if used correctly.

Toxicological information

In our experience and according to information available to us the product is not harmful to health provided it is correctly handled and processed according to the given recommendations.

• Acute toxicity: Ld50/oral/rat: >2000-10,000 mg/kg
• Primary skin irritation/rabbit/non-irritant: (oecd 404)
• Primary mucous membrane irritation/rabbits eyes/non-irritant: (oecd 405)

By analogy. The statement was derived from products of similar composition.

Ecological information

Climination information

• Test method: oecd 302b / iso 9888 / eec 88 / 302, c
• Method of analysis: doc reduction
• Degree of elimination: >70%
• Evaluation: readily eliminated from water

The product can be virtually eliminated from water by abiotic processes e.g. Absorption onto activated sludge.

Do not discharge product into natural waters without pre treatment (biological treatment plant).

Behaviour and environmental fate

• Bioaccumulation potential.
• The polymeric portion is not bio-available because of its structural properties.
• Inhibition of degradation activity in activated sludge is not to be anticipated during correct introduction of low concentrations.

Ecotoxic effects

Toxicity to fish (acute)
Brachydanio rerio oecd 203
Lc / ec50 (48 h): >100mg/l

Toxicity to daphnids (acute)
Daphnia magna oecd 202 / iso 6341 / eec 84 / 449 / v, c.2
Lc/ec50 (48 h): >20mg/l

Toxicity to bacteria
Pseudomonas putida din 38412 part 27 (draft)
Ec50 (0.5 h): >100mg/l

Respiratory inhibition properties of municipal activated sludge
Ec20 (0.5 h): >100mg/l (iso 8192 / oecd 209 / eec88 / 302c)

Inhibition of degredation activity in activated sludge is not to be anticipated during correct introduction of low concentrations.

Further ecological information

The product should not be allowed to find its way into inshore waters without pre treatment (biological sewage treatment plant).

By analogy. The statement was derived from products of similar composition.

Overall assessment: no negative ecological effects are expected according to the present state of knowledge.

Local effluent treatment regulations should be complied with.

Disposal considerations

Must be disposed of by special means, e.g. Suitable incineration, in accordance with local regulations.

The UK environmental protection (duty of care) regulations (ep) and amendments should be noted (united kingdom).

Transport information

Not classified as hazardous under transport regulations.

Regulatory information

Not subject to labelling in accordance with eec directives. Handle in accordance with good industrial hygiene and safety practice.

 

The data given here is based on current knowledge and experience. The purpose of this safety data is to describe the products in terms of their safety requirements. The data does not signify any warranty with regard to the products' properties.