PART IIIVISCOUS SUBSTANCES NOT REQUIRED TO BE CLASSIFIED AS FLAMMABLE LIQUIDS
For the purposes of Part I of this Schedule, substances which comply with the following conditions shall not be classified as flammable liquids, namely—
(a)the substance does not have the hazardous properties of a toxic or corrosive substance;
(b)the substance is a solution or homogeneous mixture which does not contain more than 20% nitro-cellulose;
(c)the flash point of the substance is equal to or greater than 23°C;
(d)in a suitable solvent separation test, the solvent which separates is not more than three per cent.of the volume of the substance; and
(e)the viscosity of the substance when determined at 23°C in a flow cup conforming to the International Standards Organisation Standard ISO 2431-1984 or British Standard BS 3900: Part A6-1986 and having a jet diameter of 6 mm is—
(i)in a case where the substance contains not more than 60 per cent.of a flammable liquid with a flash point of 61°C or less, not less than 40 seconds,
(ii)in any other case, not less than 60 seconds.