phosphorous pentoxide: Severe eye and skin injury and chemical burns to the respiratory track, if inhaled
aromatic alcohol (also known as phenol): It's a poisonous chemical that is corrosive in nature and readily seeps through the skin and causes burns
vinyl alcohol and magnesium hydroxide: Cause eye irritation with nausea, vomiting and diarrhoea
excessive amount of magnesium: Causes central nervous system depression, respiratory paralysis and cardiac condition; inhalation can cause damage to the respiratory tract
aluminium silicate: Highly toxic in nature and causes respiratory problem
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/toxins-samples
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/down-earth
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/health-effects
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/respiratory-diseases
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/eye-diseases
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/skin-diseases
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/pesticides-and-toxins