Revised Hazard Property Codes

Source: WM3 - Guidance on the classification and assessment of waste 1st edition 2015 

Properties of waste which render it hazardous:

“Explosive”: 'waste which is capable by chemical reaction of producing gas at such a temperature and pressure and at such a speed as to cause damage to the surroundings. Pyrotechnic waste, explosive organic peroxide waste and explosive self-reactive waste is included’
“Oxidizing”:‘waste which may, generally by providing oxygen, cause or contribute to the combustion of other materials’
HP3 "Flammable":
- flammable liquid waste: liquid waste having a flash point below 60°C or waste gas oil, diesel and light heating oils having a flash point > 55°C and ≤ 75°C;
- flammable pyrophoric liquid and solid waste: solid or liquid waste which, even in small quantities, is liable to ignite within five minutes after coming into contact with air;
- flammable solid waste: solid waste which is readily combustible or may cause or contribute to fire through friction;
- flammable gaseous waste: gaseous waste which is flammable in air at 20°C and a standard pressure of 101.3 kPa;
- water reactive waste: waste which, in contact with water, emits flammable gases in dangerous quantities;
- other flammable waste: flammable aerosols, flammable self-heating waste, flammable organic peroxides and flammable self-reactive waste.
- Waste which on application can cause skin irritation or damage to the eye.
- Hazards HP 4 and HP 8 are linked because they refer to the potential for harm or damage to tissue at different levels of severity. See C8 for further details.
- Hazardous wastes containing irritant substances will only display irritant properties. Hazardous wastes containing corrosive substances can display either corrosive or irritant properties dependent upon concentration.
- The mechanical irritation produced by some substances, for example mineral wool, is not included within the definition of HP 4.
HP5“Harmful”: waste which can cause specific target organ toxicity either from a single or repeated exposure, or which cause acute toxic effects following aspiration
HP6“Toxic”: waste which can cause acute toxic effects following oral or dermal administration, or inhalation exposure
HP7“Carcinogenic”: waste which induces cancer or increase its incidence.
HP8“Corrosive”: waste which on application, can cause skin corrosion.
HP9“Infectious”: waste containing viable micro-organisms or their toxins which are known or reliably believed to cause disease in man or other living organisms.
HP10“Toxic for reproduction”: waste which has adverse effects on sexual function and fertility in adult males and females, as well as developmental toxicity in the offspring.
HP11“Mutagenic”: waste which may cause a mutation, that is a permanent change in the amount or structure of the genetic material in a cell.
HP12"Release of an acute toxic gas": waste which releases acute toxic gases (Acute Tox. 1, 2 or 3) in contact with water or an acid
HP13“Sensitizing”: waste which contains one or more substances known to cause sensitising effects to the skin or the respiratory organs
HP14“Ecotoxic”: waste which presents or may present immediate or delayed risks for one or more sectors of the environment.
Waste capable of exhibiting a hazardous property listed above not directly displayed by the original waste