99.9999% Mercury Liquid

Chemical Properties
The only metal that exists in liquid state at room temperature (symbol Hg, atomic number 80).
Easily forms amalgams with metals such as sulfur, gold, and silver.
High density (13.534 g/cm³), high surface tension, and strong electrical and thermal conductivity.

Liquid mercury poses relatively low risks upon inhalation or skin contact. However, **mercury vapor** (which can volatilize at room temperature) and organic mercury compounds** (such as methylmercury) are highly toxic and can cause damage to the nervous and kidney systems.

Traditional Industries
Chlor-alkali Industry: Production of chlorine gas and sodium hydroxide through mercury electrolysis (gradually replaced by ion-exchange membrane method).
Electronics and Electrical Appliances: Fluorescent lamps, thermometers, blood pressure monitors, switches and relays (reduction due to environmental restrictions).
Dentistry: Silver amalgam dental filling materials (gradually phased out in Europe and America, still used in some developing countries).

 Emerging and Specialized Applications
Gold Mining: Mercury is used for extracting gold from small-scale gold mines (strictly restricted under the Minamata Convention).
Pharmaceuticals and Laboratories: Antimicrobial preservatives for vaccines (thimerosal), calibration solutions for precision instruments.
Military and Aerospace: Mercury fulminate (explosive propellant), liquid metal coolant (for nuclear reactors).

Major Producing Countries
China: The largest producer globally (with mercury mines in Guizhou, Shaanxi, etc.).
Spain: Almaden mercury mine (has been shut down and is now a core reserve site).
Others: Kyrgyzstan, Russia, Mexico, etc.
Price and Supply and Demand
Price fluctuates greatly (recently around **$200-$500/kg**, higher purity grades like 99.99% are more expensive). Demand has declined (due to the popularity of alternative technologies), but there are still rigid demands in fields such as healthcare and military industry.
Trade Direction
Exporting Countries: China, Russia, Mexico.
Importing Countries: India (for dental products and gold refining), African countries (for small-scale mining), Southeast Asia (for electronics industry).

Minamata Convention
Key Provisions:
 Prohibit the construction of new mercury mines and gradually phase out existing ones (China has halted native mercury mining).
 Restrict the use of mercury in batteries, cosmetics, etc.
Strictly control the transportation and disposal of mercury waste.
Export Restrictions: A "consent letter of import" from the importing country is required for export by the contracting parties.
Regional Regulations
EU: The REACH regulation restricts the usage of mercury and prohibits exports (except for special cases such as scientific research).
USA: The EPA requires exporters to apply for a license (in accordance with the TSCA regulation).
China: It is included in the "Catalogue of Toxic Chemicals Subject to Strict Restrictions in China", and exporters are required to obtain an Environmental Management Registration Certificate for Export.

Trade Risks
Verification of Buyer's Qualifications: Be vigilant against illegal purchases intended for small-scale gold mining (a terminal use declaration is required).
Compliance with Transportation: Packaging: UN-certified steel cylinders / specially designed containers, labeled "Toxic Liquid" (UN 2809).
Documents: MSDS, Dangerous Goods Transportation Permit, Compliance Labels.
Substitute Technological Impact
Electronic Industry: Digital thermometers replacing mercury thermometers.
Gold Extraction: Mercury-free processes such as cyanidation and sodium borohydride method.
Environmental Protection and Reputation Risk
It is recommended to emphasize the sustainable supply chain for recycling mercury (such as extracting it from waste fluorescent lamps).

Market Contraction: Traditional applications have declined, but there will be long-term demand from sectors such as military and scientific research.
Circular Economy: Mercury recovery technologies (such as pyrolysis and distillation purification) will become the main supply source.
Technical Barriers: High-purity (≥99.999%) mercury still holds irreplaceable value in high-tech fields such as semiconductors.

International Organizations: United Nations Environment Programme (UNEP), Secretariat of the Minamata Convention.
Industry Reports: Annual Mercury Reports by the United States Geological Survey (USGS), Data from the China Nonferrous Metals Industry Association.
Guidelines for Alternative Technologies: WHO's Directory of Mercury-Free Medical Devices.

 If you want to know more about mercury, please feel free to discuss with me at any time!