Registration Dossier
Registration Dossier
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EC number: 233-059-8 | CAS number: 10026-12-7
Oxidising properties
Administrative data
Link to relevant study record(s)
Description of key information
The burning time of 4:1 and 1:1 mixtures of niobium pentachloride and cellulose exceeded those of the 3:7 potassium bromate-cellulose reference mixture. In none of the 5 tests of niobium pentachloride with cellulose scorch was observed. The results indicate that niobium pentachloride does not have to be classified as oxidizing solid.
Key value for chemical safety assessment
- Oxidising properties:
- no
Additional information
The testing of the oxidizing properties of niobium pentachloride has been conducted according to UN Regulation Test O.1 (2009) by evaluating the burning times of mixtures of niobium pentachloride in the rations of 4:1 and 1:1. The results were then compared to reference mixtures consisting of potassium bromate and cellulose (ratios 2:3 and 3:7). The recording of burning times were taken from the time power was applied to the heating wire until the end of occurring main reactions such like inflammation, incandescence or glowing combustion. Five replications were performed for each test/reference mixture. The classification of niobium pentachloride follows the UN Transportation Regulation and GHS or EC 1272/2008 (CLP Regulation) Annex 1:2.14. The burning time of 4:1 and 1:1 mixtures of niobium pentachloride and cellulose exceeded those of the 3:7 potassium bromate-cellulose reference mixture. In none of the 5 tests of niobium pentachloride with cellulose scorch was observed. The results indicate that niobium pentachloride does not have to be classified as oxidizing solid according to UN Transport Regulation, GHS and EC 1272/2008 (CLP Regulation), Annex 1: 2.14.
Justification for classification or non-classification
The classification of niobium pentachloride follows the UN Transportation Regulation and GHS or EC 1272/2008 (CLP Regulation) Annex 1:2.14. The burning time of 4:1 and 1:1 mixtures of niobium pentachloride and cellulose exceeded those of the 3:7 potassium bromate-cellulose reference mixture. In none of the 5 tests of niobium pentachloride with cellulose scorch was observed. The results indicate that niobium pentachloride does not have to be classified as oxidizing solid according to UN Transport Regulation, GHS and EC 1272/2008 (CLP Regulation), Annex 1: 2.14.
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