Hazard codes

Hazard code Larger letter size indicates greater hazard. For example, high hazard materials (R) include phosgene, carbon disulfide, ethylene oxide, etc. Moderate hazard materials (E) include toluene, sulfuric acid, etc. Low hazard materials (J) include soda ash, alum, etc. 

Explosive chemicals tend to be governed by separate legislation, e.g., in the UK, The Classification and Labelling of Explosives Regulations 1983. These require the HSE to classify any explosive before it may be supplied. Under the scheme, explosives are labelled according to a classification based on hazard division (Table 12.7), and on compatibility (Table 12.8), which takes into account their sensitivity, explosivity and chemical nature. Labels are diamond shaped the top half is reserved for the pictograph and division number, the bottom half shows the hazard code and the classification number. Figure 12.1 shows the label for Class 1, Division 1.1, 1.2 or 1.3 explosive. 

In this book each substance is given a hazard code between 1 ( slightly dangerous ) and 3 ( highly dangerous ). There are two disadvantages to this approach ... 

The Code du travail and NFPA hazard codes are explained in Part I in the references that are concerned with each risk. For inorganic products the inflammability, reactivity and toxicity codes are mentioned. For organic products the toxicity code is the only one that is given. Indeed, the inflammability code can be found easily (see para 1.5.1) and the reactivity code is included in chapter 6 under dangerous reactions of inorganic products. 

Emergency Planning and Community Right-to-Know Act Federal Insecticide, Fungicide, and Rodenticide Act Freedom of Information Act Hazard code... 

To indicate its reason for listing a waste, U.S. EPA assigns a hazard code to each waste listed on the F, K, P, and U lists. These hazard codes are listed below. The last four hazard codes apply to wastes that have been listed because they typically exhibit one of the four regulatory characteristics of hazardous waste. There will be more about the four characteristics of hazardous waste later in this chapter. The hazard codes indicating the basis for listing a waste are as follows2 3 4 5 6 7 ... 

The hazard codes assigned to listed wastes affect the regulations that apply to handling the waste. For instance, acute hazardous wastes accompanied by the hazard code (H) are subject to stricter management standards than most other wastes. 

NFPA 85, Boiler and Combustion Systems Hazards Code, provides guidance for steam boilers and similar high reliability automatic combustion systems. In general, NFPA 85 combustion system control and safety instrumentation systems requirements exceed those defined in NFPA 86 and in API RP 556. 

Fireworks that meet the requirements of BS7114 must also be included in a publication called the UK List of Classified and Authorised Explosives (LOCAL) and more recently by LOCAF (the UK List of Classified and Authorised Fireworks 1999). These lists originate from the Explosives Acts and relate to civilian rather than to military explosives. Thus, the 1994 edition of LOCAL contains articles ascribed to Kimbolton, Pains and Le Maitre. For example, included in the FIREWORKS columns, will be found STANDARD SET PIECE. For this particular entry, the United Nations Serial Number is given as 0336, the Hazard Code is 1.4G, the UK Class and Division is 7.2, while the Competent Authority (HSE) Reference is GB 72411. 

NFPA 85 Boiler and Combustion Systems Hazard Code... 

NFPA Hazard Codes (National Fire Prevention Association) (Highlights major chemical hazards)... 

Hazard and Risk Codes Enter below the correct Hazard Code and Risk Code for each reagent, solvent, product and by product (letter and number in the relevant boxes)... 

MTT is a mutagenic and toxic agent. Reference should be made to hazard codes... 

RCRA, 40CFR261.30 hazardous codes, A B C D E and F, which represent corrosive waste (A) toxicity characteristic waste (B) acute hazardous waste (C) ignitable waste (D) reactive waste (E) and toxic waste (F) respectively A B C D E F... 

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