Summary of Mercury Control Ordinance

Supply of regulated mercury-added products will be prohibited on or after 1 December 2024.      MCO_News_20241201 

Prohibition on Export or Import of Mercury

A person must not export or import Part 1 chemicals as shown in Table 1 except under an export or import permit.

Table 1 – Part 1 Chemicals

   Type
1
Mercury
2
Mercury mixture (a mixture, having a mercury concentration of at least 95% by weight, of mercury and other substances (including alloys of mercury))


Part 1 chemicals fulfilling the conditions in Table 2 can be exempted from the export or import permit control.

Table 2 – Exemption Conditions for Export / Import of Part 1 Chemicals

Exempted Use Mode of Transportation Exempted Quantity
(Total Quantity of Mercury in the Type of Chemical to which the Chemical Belongs)
Part 1 chemical is exported or imported for use for laboratory-scale research or as a reference standard
In each package or container ≤250 g
In single shipment ≤5 kg

 

Prohibition on Keeping or Use of Mercury or Mercury Compounds

A person must not keep or use Part 2 chemicals as shown in Table 3 except under a possession permit.

Table 3 – Part 2 Chemicals

  Type
1
Mercury
2
Mercury mixture (a mixture, having a mercury concentration of at least 95% by weight, of mercury and other substances (including alloys of mercury))
3
Mercury(I) chloride (Hg2Cl2, Chemical Abstracts Service registry number 10112-91-1)
4
Mercury(II) oxide (HgO, Chemical Abstracts Service registry number 21908-53-2)
5
Mercury(II) sulphate (HgSO4, Chemical Abstracts Service registry number 7783-35-9)
6
Mercury(II) nitrate (Hg(NO3)2, Chemical Abstracts Service registry number 10045-94-0 or 7783-34-8)
7
Mercury sulphide (HgS, Chemical Abstracts Service registry number 1344-48-5)
8
Cinnabar


Part 2 chemicals fulfilling the conditions in Table 4 can be exempted from the possession permit control.

Table 4 – Exemption Conditions for Keeping Part 2 Chemicals

Exempted Use Premises for Keeping the Chemicals Exempted Quantity
(Total Quantity of Mercury in the Type of Chemical to which the Chemical Belongs)
Part 2 chemical is kept for use, or used for laboratory-scale research or as a reference standard One single laboratory (if the chemical is kept or used in a specified laboratory as defined by section 8 of the Ordinance) ≤500 g


Remark: If 2 or more separate specified laboratories are situated on the same floor of a building, and the operation of those laboratories is supervised by the same person (whether alone or jointly with another person), those laboratories are regarded as a single laboratory.

 

Prohibition on Export, Import or Manufacture of Regulated Mercury-Added Products

  • A person must not export, import or manufacture regulated mercury-added products as shown in Table 5.
  • A person must not incorporate a regulated mercury-added product into another thing as a component.
  • A person must not supply regulated mercury-added products, including online exhibiting for supplying, on or after 1 December 2024.
  • The storage or use of regulated mercury-added products does not constitute an offence.


Table 5 – Regulated mercury-added products

  Description of Regulated Mercury-added Product
1

Battery, other than—
(a) button zinc silver oxide battery having a mercury content of less than 2% by weight; or
(b) button zinc air battery having a mercury content of less than 2% by weight.

2

Switch and relay, other than—
(a) very high accuracy capacitance and loss measurement bridge having a mercury content not exceeding 20 mg per bridge; or
(b) high frequency radio frequency switch and relay, having a mercury content not exceeding 20 mg per switch or relay, in a monitoring and control instrument.

3

Compact fluorescent lamp for general lighting that—
(a) has a power output not exceeding 30 W; and
(b) has a mercury content exceeding 5 mg per lamp.

4

Linear fluorescent lamp for general lighting that—
(a) that—
(i)     is made of triband phosphor;
(ii)     has a power output of less than 60 W; and
(iii)    has a mercury content exceeding 5 mg per lamp; or

(b) that—
(i)     is made of halophosphate phosphor;
(ii)     has a power output not exceeding 40 W; and
(iii)    has a mercury content exceeding 10 mg per lamp.

5

High pressure mercury vapour lamp for general lighting.

6

Cold cathode fluorescent lamp, and external electrode fluorescent lamp, for electronic display—
(a) that—
(i)     has a length not exceeding 500 mm; and
(ii)    has a mercury content exceeding 3.5 mg per lamp;
(b) that—
(i)     has a length exceeding 500 mm but not exceeding 1500 mm; and
(ii)    has a mercury content exceeding 5 mg per lamp; or
(c) that—
(i)     has a length exceeding 1500 mm; and
(ii)    has a mercury content exceeding 13 mg per lamp.

7

Cosmetics having a mercury content exceeding 1 ppm—
(a) including skin lightening soap and cream; and
(b) excluding a cosmetic product that is intended by its manufacturer to be applied only in the vicinity of the eyes and—
(i)     that contains mercury as preservative;
(ii)    for which no effective and safe substitute for preservative is available; and
(iii)   that has a mercury content not exceeding 70 ppm.

8

Biocide and topical antiseptic.

9
 
The following non-electronic measuring devices—
(a) barometer;
(b) hygrometer;
(c) manometer;
(d) thermometer;
(e) sphygmomanometer,
 
other than one that is installed in large-scale equipment, or used for high precision measurement, and for which no suitable mercury-free alternative is available in the market.
 

 

Prohibition on Manufacturing Processes in which Mercury or Mercury Compounds are used

A person must not carry out regulated manufacturing processes as shown in Table 6.

Table 6 – Regulated Manufacturing Processes

  Description of Regulated Manufacturing Process
1
Acetaldehyde production in which mercury or mercury compounds are used as a catalyst.
2
Polyurethane production in which catalysts that contain mercury are used.
3
Sodium or potassium methylate or ethylate production in which mercury or mercury compounds are used.
4
Vinyl chloride monomer production in which mercury or mercury compounds are used.
5
Chlor-alkali production in which mercury or mercury compounds are used.

 

Resources

Poster and Leaflet

Recycling of Domestic Mercury-containing Thermometers and Sphygmomanometers