Nickel_Directive

Nickel Directive

Nickel Directive

Add article description

The Nickel Directive was a European Union directive regulating the use of nickel in jewellery and other products that come into contact with the skin. Since 1 June 2009, it has been subsumed into the REACH Regulation, specifically item 27 of Annex XVII to that regulation. Nevertheless, the term Nickel Directive is still used to refer to the restrictions on nickel usage and the prescribed test method for quantifying nickel release from products EN 1811.

Quick Facts Title, Made by ...

Allergy to nickel is a common cause of contact dermatitis, with roughly 10% of the population in Western Europe and North America being sensitive to nickel.[1][2][3] Initial sensitisation frequently occurs from jewellery such as ear studs and other body piercings,[3] and nickel allergy is more prevalent among women than men.[1][4] Once sensitised, an individual can develop contact dermatitis from shorter term contact with nickel-containing products:[4] this is a particular problem given the use of nickel in coinage,[5][6] such as the European one- and two-euro coins[7] and the Canadian five-cent piece. This led to moves by two European countries to prevent the initial sensitisation of jewellery wearers by limiting the use of nickel in piercing studs and other products which are in prolonged contact with the skin, and then to the European Union Nickel Directive in 1994.

The Nickel Directive imposes limits on the amount of nickel that may be released from jewellery and other products intended to come into direct and prolonged contact with the skin. These limits, known as migration limits, are:

  • 0.2 µg/cm2/week for post assemblies which are inserted into pierced ears and other pierced parts of the human body;[note 1]
  • 0.5 µg/cm2/week for other products intended to come into direct and prolonged contact with the skin.

Nickel release is measured by a test method known as EN 1811, which involves placing the object in an artificial sweat solution for one week, then measuring nickel by atomic absorption spectroscopy or any other appropriate technique (e.g. ICP-MS). Other, equivalent test methods may also be accepted.[8] Wear and corrosion can be simulated by a method known as EN 12472.

Notes and references

Notes

  1. [N 1]
    The original Nickel Directive imposed a limit on the amount of nickel which could be used in post assemblies (mass fraction < 0.05%). This was modified to a migration limit in 2004.

References

  1. [1]
    Schäfer, T.; Böhler, E.; Ruhdorfer, S.; Weigl, L.; Wessner, D.; Filipiak, B.; Wichmann, H. E.; Ring, J. (2001), "Epidemiology of contact allergy in adults", Allergy, 56 (12): 1192–96, doi:10.1034/j.1398-9995.2001.00086.x, PMID 11736749, S2CID 3953011.
  2. [2]
    Krob, H. A.; Fleischer, A. B. Jr.; D'Agostino, R. Jr.; Haverstock, C. L.; Feldman, S. (2004), "Prevalence and relevance of contact dermatitis allergens: a meta-analysis of 15 years of published T.R.U.E. test data", J. Am. Acad. Dermatol., 51 (3): 349–53, doi:10.1016/j.jaad.2003.11.069, PMID 15337975.
  3. [3]
    Thyssen, J. P.; Linneberg, A.; Menné, T.; Johansen, J. D. (2007), "The epidemiology of contact allergy in the general population—prevalence and main findings", Contact Dermatitis, 57 (5): 287–99, doi:10.1111/j.1600-0536.2007.01220.x, PMID 17937743, S2CID 44890665.
  4. [4]
    Why is Nickel Regulated?, Birmingham Assay Office, retrieved 12 October 2011.
  5. [5]
    Gollhausen, R.; Ring, J. (1991), "Allergy to coined money: nickel contact dermatitis in cashiers", J. Am. Acad. Dermatol., 25 (2 Pt 2): 365–69, doi:10.1016/0190-9622(91)70206-H, PMID 1832693.
  6. [6]
    Shum, K. W.; Meyer, J. D.; Chen, Y.; Cherry, N.; Gawkrodger, D. J. (2003), "Occupational Contact Dermatitis to Nickel: Experience of the British Dermatologists (EPIDERM) and Occupational Physicians (OPRA) Surveillance Schemes", Occup. Environ. Med., 60 (12): 954–57, doi:10.1136/oem.60.12.954, JSTOR 27732109, PMC 1740429, PMID 14634188.
  7. [7]
    Nestle, O.; Speidel, H.; Speidel, M. O. (2002), "High nickel release from 1- and 2-euro coins", Nature, 419 (6903): 132, Bibcode:2002Natur.419..132N, doi:10.1038/419132a, PMID 12226655, S2CID 52866209.
  8. [8]
    Quick Nickel Test, Birmingham Assay Office, archived from the original on 18 November 2011, retrieved 12 October 2011.
Share this article:

This article uses material from the Wikipedia article Nickel_Directive, and is written by contributors. Text is available under a CC BY-SA 4.0 International License; additional terms may apply. Images, videos and audio are available under their respective licenses.