Important Considerations When Purchasing Chemicals
These chemicals should be removed from the schools if alternatives can be used. For those that must be retained, amounts should be kept to a minimum. These are appropriate for advanced-level High School classes only.
This following list was generated from the School Chemistry Laboratory Safety Guide published by U.S. Department of Health and Human Services, National Institute for Occupational Safety and Health [2006].
Carcinogenic substances were identified from the Report on Carcinogens (10th Edition) generated by the National Toxicology Program (2002).
Chemical |
CAS Number |
Hazard |
Acetamide |
60–35–5 |
Combustible solid |
Aluminum chloride |
7446–70–0 |
Water reactive, corrosive |
Ammonium bichromate |
7789–09–5 |
Oxidizer, corrosive, known human carcinogen |
Ammonium oxalate |
1113–38–8 |
May be fatal if inhaled or ingested |
Ammonium vanadate |
7803–55–6 |
May be fatal if inhaled or ingested |
Antimony |
7440–36–0 |
May be fatal if inhaled, irritant |
Antimony oxide |
1309–64–4 |
Irritant |
Antimony potassium tartrate |
11071–15–1 |
Irritant |
Barium chloride |
10361–37–2 |
May be fatal if ingested, irritant |
Benzone (phenylbutazone) |
50–33–9 |
Irritant |
Beryllium carbonate |
66104–24–3 |
Irritant |
Bromine |
7726–95–6 |
Oxidizer, corrosive, may be fatal if inhaled or ingested |
Cadmium and cadmium compounds |
N/A |
Known human carcinogen |
Carmine |
860–22–0 |
Irritant, burning may produce carbon monoxide, carbon dioxide, sulfur oxides, and nitrogen oxides. |
Catechol |
120–80–9 |
Corrosive |
Chromic acid |
7738–94–5 |
Oxidizer, known human carcinogen |
Chromium acetate |
1066–30–4 |
Irritant |
Cobalt, metal |
7440–48–4 |
Possible human carcinogen (IARC, Group 2B) |
Cobalt nitrate |
10141–05–6 |
Oxidizer, irritant |
Cyclohexane |
110–82–7 |
Flammable (NFPA = 3) |
Cyclohexene |
110–83–8 |
Flammable (nfpa = 3), corrosive, forms peroxides |
Dichloroindophenol sodium salt |
620–45–1 |
Irritant |
2,4–Dinitrophenol |
51–28–5 |
Irritant |
Ferrous Sulfate |
7720–78–7 |
Irritant |
Formaldehyde (formalin) |
50–00–0 |
Flammable (NFPA = 3), reasonably anticipated human carcinogen |
Fuchsin (acid/basic) |
3244–88–0/ 632–99–5 |
Irritant |
Gasoline |
8006–61–9 |
Flammable (NFPA = 3) |
Hematoxylin |
517–28–2 |
Irritant |
Hydrogen sulfide |
7783–06–4 |
Corrosive |
Hydroquinone |
123–31–9 |
May be fatal if ingested |
Isoamyl alcohol (isopentyl alcohol) |
123–51–3 |
Irritant, combustible liquid and vapor |
Isobutyl alcohol |
78–83–1 |
Flammable (NFPA = 3) |
Magnesium chlorate |
10326–21–3 |
Irritant |
Methyl ethyl ketone |
78–93–3 |
Irritant, flammable (NFPA = 3) |
Methyl oleate |
112–62–9 |
Toxic properties not investigated |
Nickel carbonate |
3333–67–3 |
Reasonably anticipated human carcinogen |
Nickelous acetate |
373–02–4 |
Reasonably anticipated human carcinogen |
Paradichlorobenzene |
106–46–7 |
Irritant |
Pentane |
109–66–0 |
Irritant, flammable (NFPA = 4) |
Petroleum ether |
8032–32–4 |
Flammable (NFPA = 4) |
1–Phenyl–2–Thiourea (Phenylthiocarbamide) |
103–85–5 |
May be fatal if inhaled or ingested |
Potassium chlorate |
3811–04–9 |
Oxidizer |
Potassium chromate |
7789–00–6 |
Oxidizer, known human carcinogen |
Potassium periodate |
7790–21–8 |
Oxidizer |
Potassium permanganate |
7722–64–7 |
Oxidizer, corrosive |
Salol (phenyl salicylate) |
118–55–8 |
Irritant |
Sodium bromate |
7789–38–0 |
Oxidizer |
Sodium chlorate |
7775–09–9 |
Oxidizer |
Sodium fluoride |
7681–49–4 |
May be fatal if inhaled or ingested |
Sodium oxalate |
62–76–0 |
Corrosive, may be fatal if ingested |
Sodium nitrate |
7631–99–4 |
Oxidizer, irritant |
Sodium silicofluoride |
16893–85–9 |
Toxic |
Sudan III |
85–86–9 |
Decomposes to oxides of nitrogen |
Sulfamethazine |
57–68–1 |
Irritant |
Toluene |
108–88–3 |
Flammable (NFPA = 3), irritant, may be fatal if ingested |
Trichloroethylene |
79–01–6 |
Reasonably anticipated human carcinogen |
Urethane |
51–79–6 |
Combustible, reasonably anticipated human carcinogen |
Xylenes |
1330–20–7 |
Flammable (NFPA = 3), irritant, may be fatal if ingested |
This information is from the School Chemistry Laboratory Safety Guide created by the U.S. Consumer Safety Product Commission (CPSC), Department of Health and Human Services, Centers for Disease Control and Prevention (CDC), and the National Institute for Occupational Safety and Health (NIOSH).
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