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Date of Issue : Nov 1999 1. IDENTIFICATION
General Product Name : MAGNESIUM FLUOROSILICATE, HEXAHYDRATE Other Names : MAGNESIUM SILICOFLUORIDE MAGNESIUM HEXAFLUOROSILICATE; MAGNESIUM FLUOROSILICATE UN No. : 2853 Dangerous Goods Class : 6.1 Subsidiary Risk : None Allocated Hazchem Code : 2Z Pack Group : III EPG : 34 Poisons Schedule : 6 Uses : Hardening and waterproofing of concrete, cement, brick and plaster surfaces. As a wood preserver. Used in ceramics and glass. Used in moth-proofing compounds for textiles.
1.1 Physical Description / Properties
Appearance : White granular crystals. Formula : MgSiF6.6H2O Boiling Point : Decom deg C Melting Point : >100 deg C Vapour Pressure : N/A Specific Gravity : 1.79 (water = 1) Flash Point : N/A pH : N/A () Solubility in water : 648 g/l (25 deg C) Flammability Limits (as percentage volume in air) Lower Explosion Limit : N/A Upper Explosion Limit : N/A 1.2 Other Properties
Reacts with acids evolving HF and SiF4, irritating and corrosive gases. 1.3 Ingredients
2. HEALTH HAZARD INFORMATION
2.1 Health Effects - Acute Swallowed
Moderately toxic. Slightly irritative. Eye
Moderately irritative. Skin
Slightly irritative. Moderately toxic. Can be absorbed through the skin. Inhaled
Exposure to dust is moderately irritative to the respiratory tract (including mucous membranes, throat and lungs). Moderately toxic. 2.2 Health Effects - Chronic
May cause osteosclerosis, kidney damage, and a rash may develop.
2.3 First Aid
Swallowed
Contact a docotr or the immediately. Give 1-3 cups of water, induce vomiting (IPECAC syrup or stimulate throat with finger). Immediately transport to a hospital or doctor.
Eye
Flood eyes with water for 15 minutes - retract eyelids often. Immediately transport to a doctor or hospital.
Skin
Remove all contaminated clothing including footwear. Wash affected areas thoroughly with mild soap and water. If conditions persists, contact a doctor or the .
Inhaled
Remove from containated area immediately; avoid becoming casualty. If not breathing apply artificial resuscitation, experienced persons may administer oxygen if breathing if difficult. Immediately transport to a hospital or doctor.
First Aid Facilities
Ensure an eye bath and safety shower are available and ready for use.
2.5 Advice to Doctor
Symptomatic treatment only. Persons who have inhaled fumes produced in a fire may not show immediate symptoms. Patients should be kept under medical observation for at least 48 hours.
2.6 Toxicity Data
Oral (guinea pig) LD50: 200 mg/kg.
3. PRECAUTIONS FOR USE
3.1 Exposure Standards
None established.
3.2 Engineering Controls
Ensure adequate ventilation to keep airbourne concentrations low.
3.3 Personal Protection
All purpose canister respirator, butyl rubber gloves and boots, cotton overalls to protect skin and clothing. Do not wear contact lenses. Store work clothing separately from street clothing. Wash containated clothing before reuse.
3.4 Flammability
Material is non flammable. SAFE HANDLING INFORMATION
4.1 Storage / Transport
Transport or store away from strong acids. Transport or store in a dry place.
4.2 Packaging / Labelling UN No. 2853 Class 6.1 Sub Risk None Allocated Hazchem Code 2Z Pack Group III EPG No. 34 Shipping Name MAGNESIUM FLUOROSILICATE, HEXAHYDRATE Hazard HARMFUL
Risk Phrases R22 Harmful if swallowed.
Safety Phrases S2 Keep out of the reach of children. S13 Keep away from food, drink and animal foodstuffs. S24/25 Avoid contact with skin and eyes.
4.3 Spills and Disposal
Spills
Clean up personnel should wear full protective clothing including respiratory protection. Avoid rasing dust.
Contain with sand or dirt. Shovel into plastic film bags. Add/mix small portions of material to excess water in an open vessel. Cover/mix with soda ash or slaked lime. Neutralise with 6M-HCl if basic / 6M-NaOH if acidic. If material is not contaminated reuse the material. DO NOT wash untreated material down the drain or sewer.
Disposal
For SMALL quantities - contact Local Waste Disposal Authority before you dispose of to the sewer with a large quantity of water. For LARGE quantities - contact Local Waste Disposal Authority before you add sludge to landfill.
4.4 FIRE AND EXPLOSION HAZARD Fire / Explosion
Evolves irritating gases on decomposition. Evolves toxic gases on decomposition. Evovles corrosive gases on decomposition. Evacuate area - move upwind of fire and summon Fire Brigade immediately, dial 000.
Extinguishing Media
Firefighters should wear full protective clothing including self contained breathing apparatus. Move upwind of fire and summon Fire Brigade immediately, dial 000. Use water fog to extinguish fire if unavailable water spray. Use alcohol or polymer foam to extinguish fire. Use dry chemical type extinguishers. Use equipment/media appropriate to surrounding conditions. 5 OTHER INFORMATION
Other Information
Contact with strong acids may causeformation of toxic & irritating HF gas.
5.1 Contact Points
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The information above is believed to be accurate and represents the best information currently available to us. However, we make no warranty of merchantability or any other warranty, express or implied, with respect to such information, and we assume no liability resulting from its use.
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