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Date of Issue : May 1999 1. IDENTIFICATION
General Product Name : SODIUM MOLYBDATE DIHYDRATE Other Names : UN No. : N/A Dangerous Goods Class : None Allocated Subsidiary Risk : None Allocated Hazchem Code : N/A Pack Group : 0 EPG : N/A Poisons Schedule : N/A Uses : Reagent in analytical chemistry, paint pigment, production of molybdated toners and lakes, metal finishing, brightening agent for zinc plating, corrosion inhibitor, catalyst in dye and pigment production, additive for fertilizers and feeds, micronutrient.
1.1 Physical Description / Properties
Appearance : White Small, lustrous, crystalline plates. Formula : Na2MoO4.2H2O Boiling Point : N/A deg C Melting Point : 687 deg C Vapour Pressure : N/A Specific Gravity : 3.28 (water = 1) Flash Point : N/A pH : 10 (5% aqueous solution) Solubility in water : 840 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
Loss of crystalline water at 100 deg C Bulk density : 1000 kg/m3 Change in physical state : 687 deg C 1.3 Ingredients
2. HEALTH HAZARD INFORMATION
2.1 Health Effects - Acute Swallowed
Eye
Inflammation Skin
Irritation Inhaled
Irritation to upper respiratory tract 2.2 Health Effects - Chronic
2.3 First Aid
Swallowed
Give large amounts of water, seek medical attention.
Eye
Flush with copious amounts of water.
Skin
Flush contact area with copious amounts of water.
Inhaled
Remove to fresh air, seek medical attention.
First Aid Facilities
Ensure an eye bath and safety shower are available and ready for use.
2.5 Advice to Doctor
Treat symptomatically based on judgement of doctor and individual reactions of patient.
2.6 Toxicity Data
Acute LD50 Oral rat : 4233 mg/kg body weight Acute LD50 Dermal rat : > 2000 mg/kg body weight Acute LC50 Inhalation rat (4hr) : > 1.93 mg/l Effects of exposure and symptoms : LC50 for 4 hr is in excess of maximum achievable concentration Sensitisation : contact with skin or eyes may cause irritation. Inhalation of dust may cause irriation to upper respiratory tract. Carcinogenicity : not available, not mentioned in existing literature Mutagenicity : idem Reproductuve toxicity : N/A Narcosis : N/A Other data: Eyes - New Zealand white strain rabbits - very slight conjunctival inflammation resolved one to three days after instillation. Skin - New Zealand white strain rabbits - no irritation noted in any animal. Respiratory - N/A.
3. PRECAUTIONS FOR USE
3.1 Exposure Standards
The following exposure standard has been established by Worksafe : Molybdenum, soluble compounds (as Mo) : TWA 5 mg/m3. TLV-level : 5 mg Mo/m3 or 12.6 mg sodium molybdate/m3.
3.2 Engineering Controls
Use efficient dust filters to collect generated dust; workers to use efficient masks with filter cartridges.
3.3 Personal Protection
Rubber gloves, eye protection by safety glasses with side shields. Wash hands, and face thoroughly after handling and before work breaks, eating, drinking, smoking and using toilet facilities.
3.4 Flammability
Product is not flammable on itself but water soluble. SAFE HANDLING INFORMATION
4.1 Storage / Transport
Store in dry conditions. Keep container tightly closed.
4.2 Packaging / Labelling UN No. N/A Class None Allocated Sub Risk None Allocated Hazchem Code N/A Pack Group 0 EPG No. N/A Shipping Name SODIUM MOLYBDATE DIHYDRATE Hazard
Risk Phrases R52/53 Harmful to aquatic organisms; may cause long term adverse effects in aquatic environment.
Safety Phrases
4.3 Spills and Disposal
Spills
Presonal precautions: Wear self-contained breathing apparatus and full protective clothing. Environmental precautions: If a large spill occurs avoid contamination of water waste system by sealing off drainage outlets.
Clean up by carefully sweeping up the spillage and remove any residues using a high efficiency particulate filter vacuum. Clean up by shovelling and vacuum cleaning to minimise dust exposure.
Disposal
Dispose of material in accordance with all applicable federal, state and local environment regulations.
4.4 FIRE AND EXPLOSION HAZARD Fire / Explosion
Product is not flammable on itself but water soluble.
Extinguishing Media
Firefighters should wear full-protective clothing including self-contained breathing apparatus. Suitable extinguishing media: Foam, CO2. 5 OTHER INFORMATION
Other Information
When contaminated wash with soap and water, rinse abundantly with water. Aquatic toxicity: LC50 (96hr) Rainbow Trout: 7.600 mg/l EC50 (48hr) Daphnia Magna: 330 mg/l EC50 (72hr) Algae: 48 mg/l Mobility: N/A Persistence and degradability: not biodegradable Bioaccumulation potential: N/A Behaviour in sewage works: N/A German W.G.K. : class 1 (slight water hazard)
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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