1 – Product Identification
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Synonyms: Silver(I)Nitrate, Lunar Caustic
CAS: 7761-88-8
Formula Weight: 169.87 (63.5% Silver metal by weight)
Chemical Formula: AgNO3
Reportable Quantity: 454 grams
2 – Composition
Silver Nitrate: 99.9%
3 – Hazards NFPA 704
Health Rating: 2 – Intense or continued but not chronic exposure could cause temporary incapacitation or possible residual injury.
Flammability Rating: 0 – None
Reactivity Rating: 0 – Normally stable, even under fire exposure conditions, and is not reactive with water.
Contact Rating: 3 – Severe (Corrosive)
Lab Protective Equip: Safety goggles and/or face shield. Latex gloves. Good ventilation.
Storage Color Code: Yellow (Reactive)
4 – First Aid Measures
Inhalation: Remove to fresh air. Crystals will sting the nasal passages. Get medical attention as soon as possible.
Ingestion: If swallowed, Do not induce vomiting. Give a quantity of salt water. The salt water and/or stomach acid will immediately form Silver Chloride, which is much less harmful. Get medical attention immediately if the quantity ingested is more than a gram.
Skin Contact: Rub skin with table salt and a little water. Skin will probably turn dark when exposed to sunlight. Stain will vanish in a few weeks.
Eye Contact: Immediately flush eyes with plenty of distilled water. The salt in tears will form white Silver Chloride immediately. This Silver Chloride may attach to the eye. Get medical attention immediately.
5 – Fire Fighting Measures
Fire: Use an extinguishing agent suitable for surrounding fires.
Explosion: Reacts with ammonia to form an explosive Fulminating Silver when dry.
6 – Accidental Release Measures
Wear protective equipment. Clean up in a way that doesn’t disperse the crystals into the air. If it is released into water, add table salt to immediately form the less harmful Silver Chloride.
Special Note: Disposal of even small quantities of silver nitrate in waste systems connected to a septic tank is guaranteed to destroy the septic bacteria and require pumping out, flushing and seeding with fresh bacteria.
7 – Handling and Storage
Store in a closed container. Silver Nitrate is not very light sensitive, it does absorb air moisture.
8 – Exposure Limits; Airborne
OSHA Permissible Exposure Limit (PEL): 0.01 mg/m3 (TWA) as silver metal dust
ACGIH Threshold Limit Value (TLV): 0.01 mg /m3 (TWA) as soluble silver compounds
9 – Physical and Chemical Properties
Appearance: Transparent white colored crystals.
Odor: Odorless.
Solubility: 2190g/1000ml water @ 20°C (68°F).
Specific Gravity: 4.352
pH: 6
Boiling Point: 444°C (831°F) Decomposes.
Melting Point: 212°C (414°F) – Forms a brown, viscous liquid.
Vapor Density (Air=1): 4.4
Vapor Pressure (mm Hg): Very low.
10 – Stability and Reactivity
Stability: Stable at room temperature in sealed containers.
Hazardous Decomposition Products: Oxides of nitrogen.
Incompatibilities: Ammonia. Forms explosive when dry.
Conditions to Avoid: Do not allow solutions of Silver Nitrate and Ammonia to dry out.
11. Transport Information
Domestic (Land, DOT)
Hazard Class: 5.1
Packing Group: II
UN/NA: USPS Publication 52, Silver Nitrate is their item number UN1493
ORM-D: USPS Can ship within United States only.
ORM-D Packaging instruction 5A: Consumer Commodity ORM-D AIR – the weight of the contents of the primary packing container cannot exceed 1 kg. USPS publication 52, Appendix C, 1999 page 291. link
Outer Packaging: A strong outer packaging that is capable of firmly and securely holding the primary receptacle and cushioning material is required.
Mailability:
International Mail: Prohibited.
Domestic Mail: Permitted via air transportation (i.e., Express Mail, Priority Mail, and First-Class Mail rates) or surface transportation (i.e.,Standard Mail rates).
12. Manufacturer/Supplier
Salt Lake Metals
PO Box 200
Nephi, UT 84648
Email: mrets@xmission.com
www.saltlakemetals.com