Ammonium oxalate monohydrate

CAS Number : 6009-70-7

WHMIS (Ammonium oxalate monohydrate)

Workplace Hazardous Materials Information System

WHMIS 1988 classification - Note to reader
Update: 2004-08-02
  • WHMIS pictogram :


  • Toxic Material Causing Other Toxic Effects 1
  • eye irritation in animals

Disclosure at 1,0% according to classification criteria

WHMIS 2015 classification - Note to reader
Update: 2016-07-04

  • Serious eye damage/eye irritation - Category 22 3

  • WHMIS 2015 pictogram : Exclamation mark


Causes serious eye irritation (H319)

Comments: Due to the lack of data, classification regarding eye irritation (H319) was established by analogy to sodium oxalate.


  • ▲1.  Centre d'écologie et de toxicologie de l'industrie chimique européenne, Eye irritation reference chemicals data bank. Technical report / ECETOC; 48(2), 2nd ed. Bruxelles : ECETOC. (1998). [MO-028217]
  • ▲2.  National Library of Medicine, The Hazardous Substances Data Bank (HSDB). Hamilton (Ont.) : Canadian Centre for Occupational Health and Safety.
  • ▲3.  Centre canadien d'hygiène et de sécurité au travail, CHEMINFO, Hamilton, Ont. : Canadian Centre for Occupational Health and Safety

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