Registration Dossier

Guidance on Safe Use

Guidance on Safe Use

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Administrative data

First-aid measures

Inhalation: Remove from exposure. Provide rest in freely chosen position. Protect against loss of body heat. Immediate medical attention required.
Eye contact: Rinse thoroughly with copious cool running water for at least 15 minutes with eyelids open. Avoid using fast running water due to the risk of physical damage to the cornea. Immediate medical attention required.
Skin contact: Remove contaminated clothing. Wash contaminated skin with plenty of running water at room temperature, dress the burn areas with sterile bandages. Immediate medical attention required.
Ingestion: Induce vomiting immediately after the incident. Later do not induce vomiting. Immediate medical attention required.

Fire-fighting measures

Suitable extinguishing media: Non-flammable intermediate. Apply extinguishing media appropriate to the surrounding materials.
Extinguishing media that should not be used for safety reasons: Unknown.
Special hazards: Decomposes when heated and emits toxic nitrogen oxides. When mixed with flammable materials, increases their susceptibility to ignition and their burn intensity, especially after water vaporisation.
Special protective equipment for fire-fighters: During fire, harmful substances may be produced. Wear gas-proof protective clothing and breathing equipment (such as tank-fed oxygen masks).
Additional information: Need to alert the surrounding area. Evacuate all non-fire-fighting personnel from the area. Inform a superior and, if this is not possible, the Plant’s Dispatcher, call the fire brigade.

Accidental release measures

In cases of accident, procedural and/or control technologies must be used to minimise emissions and the resulting exposure during purification or cleaning and maintenance procedures

Suitable extinguishing media: Non-flammable intermediate. Apply extinguishing media appropriate to the surrounding materials.
Extinguishing media that should not be used for safety reasons: Unknown.
Special hazards: Decomposes when heated and emits toxic nitrogen oxides. When mixed with flammable materials, increases their susceptibility to ignition and their burn intensity, especially after water vaporisation.
Special protective equipment for fire-fighters: During fire, harmful substances may be produced. Wear gas-proof protective clothing and breathing equipment (such as tank-fed oxygen masks).
Additional information: Need to alert the surrounding area. Evacuate all non-fire-fighting personnel from the area. Inform a superior and, if this is not possible, the Plant’s Dispatcher, call the fire brigade.
3. Accidental release measures:
Accidental release of the intermediate to the natural environment (air, soil, water) is impossible.
Accidental release of the intermediate to the workplace environment is possible in emergency situations (electrolyte spillages on acid-resistant floors).
General recommendations: In the event of emergency situation alert the surrounding area. Evacuate all non-fire-fighting personnel from the area. Inform a superior and, if this is not possible, the Plant’s Dispatcher, call the fire brigade. If possible, limit spillages and spreading of the electrolyte (by stopping electrolyte circulation and draining off the remaining in the cell electrolyte to the circulation tank).

Handling and storage

Only properly trained and authorised personnel must handle the substance

Substance-handling procedures must be well documented and strictly supervised by the site operator


Handling: Do not allow the emission of vapours into the workplace. When handling the intermediate use leak-proof devices made of acid-resistant materials. Work in well ventilated places. In the event of ventilation failure, wear appropriate personal respiratory system protection. Do not eat, drink or smoke while handling the intermediate. Wash hands after use and before meals. A shower and eyebath should be available in the workplace.
Protection against fire and explosion: Not applicable, intermediate is non-flammable.
Storage: Store intermediate in containers resistant to AgNO3 acid solutions (acid-resistant steel, plastic). Containers should be placed in acid-resistant emergency pan. Warehouse areas should have acid-resistant floors inclined towards sewage gratings connected via a closing component with an acid sewage drain.
Additional information: Do not store intermediate together with any other chemical substances in storerooms.

Transport information

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Marine transport (IMDG)

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Exposure controls / personal protection

The substance must be rigorously contained by technical means during its whole lifecycle including manufacture, purification, cleaning and maintenance of equipment, sampling, analysis, loading and unloading of equipment or vessels, waste disposal or purification and storage

Procedural and control technologies must bee used that minimise emission and any resulting exposure

Only properly trained and authorised personnel must handle the substance

In the case of cleaning and maintenance works, special procedures such as purging and washing must be applied before the system is opened and entered


No. Chemical name CAS No. TLV [mg/m3] TLV-STEL [mg/m3]
1. Silver – fume and dust 7440-22-4 0.05 -
2. Nitrogen oxides 10102-44-0 5 10
63907-41-5
3. Nitrogen monoxide 10102-43-9 3.5 7
Measurements of occupational inhalation exposure in Precious Metals Plant are made once a year for a chosen group of workers. Personal sampling device of silver fume and dust and nitrogen oxides measurements at the workplace at the Electrorefinery Hall do not exceed TLVs levels.
Additional guidelines:
Regulation of the Minister of Labour and Social Policy of 29 November 2002 on the Maximum admissible concentration and volumes of harmful factors to health in the workplace environment (Dz.U.02.217.1833 with later amendments).
PN-Z-04008-07:2002 – Protection of air cleanliness – Air sample collection – Rules of collecting air samples in the workplace and interpretation of the results;
PN-EN 689:2002 – Workplace atmospheres – Guidance for the assessment of exposure by inhalation to chemical agents for comparison with limit values and measurement strategy;
PN-86/Z-04050.01 – Protection of air purity. Instruments and sampling set. General decisions;
PN-89/Z-01001/06 – Air purity protection. Names, definitions and units;
PN-91/Z-04216.02 - Air purity protection. Silver and its compounds content tests. Determination of silver and its compounds in the workplace using flame atomic absorption spectrometry (FAAS);
PN-74/Z-04009 sheet 07 - Air purity protection. Nitrogen and its compounds’ content test. Nitric acid determination and nitric acid and nitrogen oxides total in the workplace using colorimetric method with phenol disulphoric acid.
Ventilation requirements: Rooms must have appropriate local exhaust ventilation.
Personal protection requirements: With efficient ventilation special respiratory protection is not required. In emergency situations, when intermediate’s concentration is unknown, use the highest class protection recommended for personal protection. In the event of oxygen shortages, use autonomic or stationary equipment to isolate respiratory tract.
Personal protection:
-Eye protection: necessary, safety goggles are required;
-Skin protection: necessary, always wear nitro-, neoprene- or polyvinyl chloride-made protective gloves, protective clothing and acid-resistant shoes;
-Respiratory protection: necessary in emergency situations, use gas mask with filter for acid vapours.

Stability and reactivity

Stability: The intermediate is stable under normal conditions.
Conditions to avoid: At high temperatures emits toxic nitrogen oxide.
Materials to avoid: Alkali metals, alkaline earth metals and their sulphides, nitrites and carbides, alkalines, hydrides, tetraoxomanganates, sulphates, acetylides, nitriles, non-precious metals.
Hazardous decomposition products: At a temperature of approx. 100°C there is water vaporisation containing intermediate components. It decomposes at high temperatures and emits nitrogen oxides and silver dust vapours.

Disposal considerations

Where waste is generated, procedural and/or control technologies must be used to minimise emissions and the resulting exposure during purification or cleaning and maintenance procedures

Using of electrolyte leaves no waste. Electrolyte spillages are caused only in the event of emergency situations. After such situation spilled electrolyte is washed away from the floor with a water and led to closed acid-resistant draining system directly to the local waste water treatment plant, where it is neutralized with milk of lime. The slime obtained in the pre-treatment plant is filtered and reverted to the copper production.