Registration Dossier
Registration Dossier
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EC number: 202-016-5 | CAS number: 90-80-2
Explosiveness
Administrative data
Link to relevant study record(s)
Description of key information
In accordance with column 2 of REACH Annex VII, the explosiveness test (A.14 “Explosive Properties”, required in section 7.11) does not need to be conducted as there are no chemical groups associated with explosive properties present in the molecule.
Quite apart from the sensitivity to thermal or mechanical shock that test A.14 is intended to investigate, airborne dust clouds of the substance have been shown to be weak to moderately explosible (dust explosion class St1) when ignited by a 5 kJ or 10 kJ spark.
Key value for chemical safety assessment
- Explosiveness:
- non explosive
Additional information
In accordance with column 2 of REACH Annex VII, the explosiveness test (A.14 “Explosive Properties”, required in section 7.11) does not need to be conducted as there are no chemical groups associated with explosive properties present in the molecule.
Quite apart from the sensitivity to thermal or mechanical shock that test A.14 is intended to investigate, two studies are available that assess the explosivity of airborne dust clouds of the substance. Both tests, one sponsored by Jungbunzlauer INERIS [Loyer C (1998)] and one sponsored by Roquette Freres [Tribouilly B (2005)], were carried out in a 20L sphere according to VDI 3763.
The results of the two tests were very similar, and are tabulated below
Date |
Ignition energy |
Pmax |
VMPmax |
Kst or Kmax |
Dust Explosion class |
1998 |
5 kJ |
6.7 bar |
380 bar/s |
103 bar.m/s |
St 1 |
2005 |
10 kJ |
5.4 bar |
388 bar/s |
92 bar.m/s |
St 1 |
Dust explosion class St 1 covers substances possessing Kst values in the range 0 < Kst≤200, which are considered to be weak to moderately explosible.
Justification for classification or non-classification
The substance does not meet the criteria for classification and labelling for this endpoint, as set out in Regulation (EC) NO. 1272/2008.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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