1. What data do you need from your new supplier?

Before making a decision, it's a good idea to gather information about your future supplier and the chemicals he will supply.

• name and country of supplier (indicating whether distributor) ;

• your substance's main identification numbers (e.g. CAS No., EC No. [ELINCS or EINECS], chemical and/or trade name);

• in the case of a mixture, the percentage of each substance present; each substance in the mixture must be taken individually;

• the quantity in tonnes you wish to obtain from this supplier for each substance as such or/and contained in a mixture;

• a brief description of your and your customers' uses of the substance.

On the basis of this data, you can determine whether the...