- Acacia gum
- Agar
- Alumina
- Bauxite
- Bone ash
- Bronze powder
- Calcium chloride
- Calcium sulfate
- Charcoal, activated
- Cochineal
- Diatomaceous earth
- Drain cleaners, bacterial, solid
- Drain cleaners, enzyme, solid
- Drosophila medium
- Epsom salts
- Gypsum
- Iron pyrite
- Lactose
- Lanolin
- Magnesium sulfate
- Maltose
- Portland cement, ph < 12
- Powdered rosin
- Pumice
- Rock salt
- Salicylic acid
- Silica gel
- Sodium chloride
- Sodium sulfate
This list was developed by the NH Department of Environmental Services for guidance to assist schools in proper disposal options. For more information on proper chemical disposal in schools, please contact NHPPP at (800) 273-9469 or l nhppp@des.nh.gov.