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Quick Quiz: Chemicals with "Colorful" Names

Posted on 9/5/2025 by Lion Technology Inc.

Test your knowledge about chemicals with "colorful" names.

The Hazmat Table at 172.101 lists this chemical in 3 different "colors."






Not quite.

The Hazmat Table at 49 CFR 172.101 lists white phosphorous, yellow phosphorous, and red phosphorous.

Red phosphorus (listed as Phosphorus, amorphous) is a Division 4.1 Flammable solid. White and yellow phosphorous (e.g., "Phosphorus, white dry" and "Phosphorous, yellow dry") are Division 4.2 Spontaneously Combustible materials with Division 6.1 listed as a subsidiary hazard.

That's right.

The Hazmat Table at 49 CFR 172.101 lists white phosphorous, yellow phosphorous, and red phosphorous.

Red phosphorus (listed as Phosphorus, amorphous) is a Division 4.1 Flammable solid. White and yellow phosphorous (e.g., "Phosphorus, white dry" and "Phosphorous, yellow dry") are Division 4.2 Spontaneously Combustible materials with Division 6.1 listed as a subsidiary hazard.

This Division 6.1 poison is named partly for a non-US city that has hosted at least one NFL football game every year since 2007, except 2020.






Not quite.

London purple, a Division 6.1 poison, is an insecticide that consists of arsenic trioxide, aniline, lime and ferrous oxide. The 2024 ERG states it is "highly toxic," and "may be fatal if inhaled, ingested or absorbed through skin."

That's right.

London purple, a Division 6.1 poison, is an insecticide that consists of arsenic trioxide, aniline, lime and ferrous oxide. The 2024 ERG states it is "highly toxic," and "may be fatal if inhaled, ingested or absorbed through skin."

This hazardous substance is used in ophthalmic (eye) surgery and has a Reportable Quantity (RQ) of 10 lbs. or 4.54 kg:






Not quite.

Trypan blue is a dye used in ophthalmic surgery. It has a Reportable Quantity (RQ) of 10 lbs. or 4.54 kg, as noted in Appendix A to § 172.101—List of Hazardous Substances and Reportable Quantities.

That's right.

Trypan blue is a dye used in ophthalmic surgery. It has a Reportable Quantity (RQ) of 10 lbs. or 4.54 kg, as noted in Appendix A to § 172.101—List of Hazardous Substances and Reportable Quantities.

This chemical compound is used to test the pH of liquids:






Not quite.

Methyl orange is a pH indicator that changes color based on a solution's acidity. In acidic conditions, the solution will turn red. In alkaline conditions, the solution will turn yellow.

That's right.

Methyl orange is a pH indicator that changes color based on a solution's acidity. In acidic conditions, the solution will turn red. In alkaline conditions, the solution will turn yellow.

Copper acetoarsenite is a Division 6.1 toxic hazardous material that also goes by this name:






Not quite.

Copper acetoarsenite, or "Paris green, solid" is a Division 6.1 Toxic Substance that is used as a wood preservative, insecticide, and pigment. It contains arsenic and copper, and is an emerald-green crystalline powder.

That's right.

Copper acetoarsenite, or "Paris green, solid" is a Division 6.1 Toxic Substance that is used as a wood preservative, insecticide, and pigment. It contains arsenic and copper, and is an emerald-green crystalline powder.

Thanks for checking out today's quiz!

 

We hope you learned something new from these questions, or at least had fun.

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