The Chemical Accidents (Emergency Planning, Preparedness and Response) Rules, 1996 Schedule 1 [See rules 2(b) and 2(j)] Part I (a) Toxic Chemicals.—Chemicals having the following values of acute toxicity and which owing to their physical and chemical properties, are capable of producing major accident hazards: Sl. No. Degree of Toxicity Oral Toxicity LD 50 (mg / kg) Dermal Toxicity (Dermal LD 50) (mg / kg) Inhalation toxicity by dust and mist (mg.) 1. Extremely toxic 1-50 1-200 0.1-0.5 2. Highly toxic 51-500 201-2000 0.5-2.0 (b) Flammable Chemicals.—(i) Flammable gases: chemicals which in the gaseous state at normal pressure and mixed with air become flammable and the boiling point of which at normal pressure is 20oC or below; (ii) Highly Flammable liquids: chemicals which have a flash point lower than 23oC and the boiling point of which at normal pressure is above 20oC; (iii) Flammable liquids: chemicals which have a flash point lower than 650C and which remain liquids under pressure, where particular processing conditions, such as high pressure and high temperature, may create major accident hazards. (c) Explosives.—Chemicals which may explode under the effect of flame, heat or photochemical conditions or which are more sensitive to shocks or friction than dinitro-benzene.