MSDS – Gold Chloride – 1% solution – Revised March 7, 2013

NFPA 704

1 – Product Identification

Synonyms: Hydrogen Tetrachloro Aurate(III), Chloroauric Acid, Gold Acid Chloride

CAS: (for Gold Chloride Solution) 16903-35-8

CAS: (for HAuCl4•3H2O) 16961-25-4

Formula Weight: 339.766 (1.000% Gold metal by weight) (for HAuCl4)

Chemical Formula: Common: AuCl3 (1.534%) in water solution

Chemical Formula: Technical: HAuCl4.nH2O

Solubility: 68g/100ml (cold) -or- 680g/Liter (cold)

2 – Composition

Gold Ions: 1.000%

Chlorine Ions: 0.718%

Hydrogen Ions: 0.01%

Water: 98.18%

3 – Hazards     NFPA 704

Health Rating: 1 – Mild. Gold Chloride solution will turn skin purple.

Flammability Rating: 0 – None

Reactivity Rating: 0 – Normally stable, even under fire exposure conditions.

Lab Protective Equip: Safety goggles and/or face shield. Latex gloves.

4 – First Aid Measures

Inhalation: Remove to fresh air. Liquid will sting the nasal passages and turn them purple. Get medical attention as soon as possible.

Ingestion: If swallowed, Do NOT induce vomiting unless directed to do so by medical personnel. Get medical attention.

Skin Contact: Gold Chloride solution will turn skin purple. The proteins in skin reduce the Gold Ions to a metallic purple state. Over time, the skin will return it it’s normal color.

Eye Contact: Immediately flush eyes with plenty of distilled water. Get medical attention immediately.

5 – Fire Fighting Measures

Fire: Use an extinguishing agent suitable for surrounding fires.

Explosion: Can react with ammonia to form an explosive Fulminating Gold when dry.

6 – Accidental Release Measures

Clean up in a way that doesn’t disperse the liquid.

Special Note: Use ordinary household aluminum foil on spills to convert the Gold ions into harmless, black, Gold metal powder.

7 – Handling and Storage

Do not get on eyes, skin or clothing. Store in a closed container. Gold Chloride is not light sensitive.

Special Note: To preserve the value of Gold Chloride solution, never allow it to come in contact with metal objects. All metals (except Platinum) will reduce the Gold Ions into it’s black, Gold Powder form. Even using a metal spoon to stir the solution will deposit black gold powder from the solution.

9 – Physical and Chemical Properties

Appearance: Attractive golden yellow liquid.

Odor: Odorless.

Solubility: Extremely soluble in hot or cold water.

pH: acidic (due to the Chlorine and Hydrogen Ions in solution)

Boiling Point: 100°C (212°F).

Melting Point: not applicable.

10 – Stability and Reactivity

Stability: Stable at room temperature in sealed containers.

Hazardous Decomposition Products: Minor evolution of Chlorine gas.

Incompatibilities: Ammonia. Forms explosive when dry.

Conditions to Avoid: Do not allow solutions of Gold Chloride and Ammonia to dry out. Do not allow Gold Chloride solutions to come into contact with any metal objects (except Platinum) – else the Gold Ions will be reduced to a fine, black, gold powder.

11 – Transport Information

Domestic (Land, DOT)

ORM-D: Since it is so dilute, 1% solution can ship 1 Liter without restriction.

Canada: Cannot ship to Canada, this is a Canadian restricted item.

12 – Manufacturer/Supplier

Salt Lake Metals

1115 East Brigadoon Court

Salt Lake City, UT 84117

Tel: 801-265-8921