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Studies were performed according to UN Transport of Dangerous Goods Recommendations, Fourth Revised Edition (Class 8, Packing 8, Packing group III, test C1) on corrosivity to metals; according to UN Recommendation on the Transportation of Dangerous Goods, Manual of Tests and Criteria for substances of Class 4, Division 4.3, on the emission of flammable gases on contact with water; and according to CIPAC method MT 171 on dustiness were conducted.

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Studies were performed according to UN Transport of Dangerous Goods Recommendations, Fourth Revised Edition (Class 8, Packing 8, Packing group III, test C1) on corrosivity to metals; and according to UN Recommendation on the Transportation of Dangerous Goods, Manual of Tests and Criteria for substances of Class 4, Division 4.3, on the emission of flammable gases on contact with water; and according to CIPAC method MT 171 on dustiness were conducted.

The percentage mass losses on steel and aluminium were found to be < 13.5 % over 7 days. The sample of sodium pentaborate granular is therefore exempt from classification as a corrosive substance of UN Class 8 Packing group III according to the UN Transport of Dangerous Goods Recommendations.

Sodium pentaborate produced no flammable gases on contact with water.

Sodium pentaborate granular was assessed according to CIPAC method MT 171. Sodium pentaborate granular, which has a particle size (d50 mm) of, did not produce significant amounts of dust and was classed as nearly dust free. Disodium pentaborate decahydrate which has a particle size (d50 mm) of, did not produce significant amounts of dust and was classed as nearly dust free.