WHMIS (Ammonium dimolybdate)

Workplace Hazardous Materials Information System

WHMIS 1988 classification - Note to reader

Uncontrolled product according to WHMIS classification criteria

Disclosure at 1,0% according to the Ingredient disclosure list

Comments: This product is included in the Ingredient disclosure list under the chemical identity molybdenum compounds, n.o.s. (not otherwise specified). The chemical identity and the concentration of this ingredient must be disclosed on the MSDS if it is present in a concentration equal to or greather than 1,0 % in a controlled product.

WHMIS 2015 classification - Note to reader
Update: 2018-07-26

  • Carcinogenicity - Category 21 2
  • Reproductive toxicity - Category 21 3 4 5 6
    • Toxic to the reproductive function

  • WHMIS 2015 pictogram : Health hazard


Suspected of causing cancer (H351)
Suspected of damaging fertility or the unborn child (H361)

Ingredient disclosure

Comments: Due to the lack of data, classification regarding toxic to reproduction (H361) was established by analogy to Sodium Molybdate.

Due to the lack of data, classification regarding carcinogenicity (H351) was established by analogy to Molybdenum soluble compounds.


  • ▲1.  Health council of the Netherlands, «Molybdenum and Molybdenum compounds. Health-based recommended occupationel exposure limit.» In: The Hague: Health Concil of the Netherlands. (2013).   http://www.gezondheidsraad.nl/sites/default/files/201330Molybdenum_.pdf
  • ▲2.  American Conference of Governmental Industrial Hygienists, «Molybdenum and compounds (CAS 7439-98-7).» In: Documentation of the threshold limit values and biological exposure indices / Documentation of TLV's and BEI's. Cincinnati, Ohio : ACGIH. (2003). Publication #0100Doc.   http://www.acgih.org
  • ▲3.  Centre canadien d'hygiène et de sécurité au travail, CHEMINFO, Hamilton, Ont. : Canadian Centre for Occupational Health and Safety   http://ccinfoweb.ccohs.ca/cheminfo/search.html
  • ▲4.  Jeter M.A. et Davis G.K., «The Effect of Dietary Molybdenum Upon Growth, Hemoglobin, Reproduction and Lactation in Rats.» The Journal of Nutrition. Vol. 54, no. 2, p. 215-220. (1954).   http://jn.nutrition.org/content/54/2/215.full.pdf
  • ▲5.  Pandey, R. et Singh, S.P., «Effects of molybdenum on fertility of male rats.» BioMetals. Vol. 15, no. 1, p. 65-72. ( Mar. 2002). [AP-000935]
  • ▲6.  Meeker J.D. et al., «Cadmium, Lead and Other Metals in Relation to Semen Quality: Human Evidence for Molybdenum as a Male Reproductive Toxicants..» Environmental Health Perspectives. Vol. 116, no. 11, p. 1473-1479. (2008).

The [number] refers to the ISST database of the CSST Documentation Center.