SDS
Fire Fighting
When silica dust is dispersed in air, firefighters should wear inhalation protection as hazardous substances from the fire may be adsorbed on the silica
particles.
When heated to extreme temperatures, (>1700 deg.C) amorphous silica can fuse.
Alert Fire Brigade and tell them location and nature of hazard.
Wear full body protective clothing with breathing apparatus.
Prevent, by any means available, spillage from entering drains or water courses.
Fight fire from a safe distance, with adequate cover.
Extinguishers should be used only by trained personnel.
Use water delivered as a fine spray to control fire and cool adjacent area.
Avoid spraying water onto liquid pools.
DO NOT approach containers suspected to be hot.
Cool fire exposed containers with water spray from a protected location.
If safe to do so, remove containers from path of fire.
If fire gets out of control withdraw personnel and warn against entry.
Equipment should be thoroughly decontaminated after use.
Fire/Explosion Hazard
Zinc dust clouds are potentially explosive.
Electric sparks may ignite the dust cloud even in atmospheres containing low oxygen (10%).
In air the dust may be ignited in contact with hot surfaces or flame where temperatures exceed 600 deg C.
Will not burn but increases intensity of fire.
Heating may cause expansion or decomposition leading to violent rupture of containers.
Heat affected containers remain hazardous.
Contact with combustibles such as wood, paper, oil or finely divided metal may produce spontaneous combustion or violent decomposition.
May emit irritating, poisonous or corrosive fumes.
DO NOT disturb burning dust. Explosion may result if dust is stirred into a cloud, by providing oxygen to a large surface of hot metal.
DO NOT use water or foam as generation of explosive hydrogen may result.
With the exception of the metals that burn in contact with air or water (for example, sodium), masses of combustible metals do not represent unusual fire risks
because they have the ability to conduct heat away from hot spots so efficiently that the heat of combustion cannot be maintained - this means that it will require a
lot of heat to ignite a mass of combustible metal. Generally, metal fire risks exist when sawdust, machine shavings and other metal 'fines' are present. Metal
powders, while generally regarded as non-combustible:
May burn when metal is finely divided and energy input is high.
May react explosively with water.
May be ignited by friction, heat, sparks or flame.
May REIGNITE after fire is extinguished.
Will burn with intense heat.
Note:
Metal dust fires are slow moving but intense and difficult to extinguish.
Containers may explode on heating.
Dusts or fumes may form explosive mixtures with air.
Gases generated in fire may be poisonous, corrosive or irritating.
Hot or burning metals may react violently upon contact with other materials, such as oxidising agents and extinguishing agents used on fires involving
ordinary combustibles or flammable liquids.
Temperatures produced by burning metals can be higher than temperatures generated by burning flammable liquids
Some metals can continue to burn in carbon dioxide, nitrogen, water, or steam atmospheres in which ordinary combustibles or flammable liquids would be
incapable of burning.
A fire in bulk finely divided carbon may not be obviously visible unless the material is disturbed and sparks appear. A straw broom may be useful to produce the
disturbance. Explosion and Ignition Behaviour of Carbon Black with Air
Lower Limit for Explosion: 50 g/m3 (carbon black in air)
Maximum Explosion Pressure: 10 bar
Maximum Rate of Pressure Rise: 30-100 bar/sec
Minimum Ignition Temperature: 315 deg. C.
Ignition Energy: >1 kJ
Glow Temperature: 500 deg. C. (approx.)
Notes on Test Methods: Tests 1, 2 and 3 were conducted by Bergwerkeschaftliche Versuchstrecke, Dortmunde-Derne, using a 1 m3 vessel with two chemical
igniters having an intensity of 5000 W.S. Tests 1 and 2 results are confirmed by information in the Handbook of Powder Technology, Vol. 4 (P. Field) In Test 4, a
modified Godbert-Greenwald furnace was used. See U.S. Bureau of Mines, Report 5624, 1960, p.5, 'Lab Equipment and Test Procedures'. Test 5 used a 1 m3
vessel with chemical igniters of variable intensity. Test 6 was conducted in a laboratory oven. Active glowing appeared after 3 minutes exposure. (European
Committee for Biological Effects of Carbon Black) (2/84)
SECTION 6 ACCIDENTAL RELEASE MEASURES
Personal precautions, protective equipment and emergency procedures
Minor Spills
Clean up all spills immediately.
No smoking, naked lights, ignition sources.
Avoid all contact with any organic matter including fuel, solvents, sawdust, paper or cloth and other incompatible materials, as ignition may result.
Avoid breathing dust or vapours and all contact with skin and eyes.
Control personal contact with the substance, by using protective equipment.
Contain and absorb spill with dry sand, earth, inert material or vermiculite.
DO NOT use sawdust as fire may result.
Scoop up solid residues and seal in labelled drums for disposal.
Neutralise/decontaminate area.
Major Spills
If molten:
Contain the flow using dry sand or salt flux as a dam.
All tooling (e.g., shovels or hand tools) and containers which come in contact with molten metal must be preheated or specially coated, rust free and approved
for such use.
Allow the spill to cool before remelting scrap.
Clear area of personnel and move upwind.
Alert Fire Brigade and tell them location and nature of hazard.
Wear full body protective clothing with breathing apparatus.
Prevent, by any means available, spillage from entering drains or water courses.
No smoking, flames or ignition sources. Increase ventilation.
Version No: 1.0 Page 4 of 16
Alkaline Battery
Issue Date:28/05/2015
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