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EC number: 247-148-4
CAS number: 25637-99-4
The key study for this endpoint is as follows:Sárvári, Z. (2010). Determination of the melting point of Great Lakes CD-75P. Testing Laboratory: LAB Research Ltd., H-8200 Vesprém, Szabadságpuszta, Hungry. Report no.: 10/113-344AN. Owner Company: Chemtura Corporation, 199 Benson Road, Middlebury, Connecticut 06749, USA. Report date: 2010-05-03.The following information is presented as supporting information only.PBT Working Group (2008) ECB Summary Sheet, PBT Working Group, List No. 58, p2, Section 1.2, Table 1.1.Smith, K., Liu, C.-H., El-Hiti, G.A., Kang, G.S., Jones, E., Clement, S.G., Checquer, A.D., Howarth, O.W., Hursthouse, M.B. & Coles, S.J. (2005) An extensive study of bromination of cis,trans,trans-1,5,9-cyclodedecantriene: product structures and conformations, Org. Biomol. Chem (2005), Vol. 3, pp. 1880-1892.Barontini, F., Cozzani, V. & Petarca, L. (2001) Thermal stability and decomposition products of Hexabromocyclododecane, Ind. Eng. Chem. Res. (2001) Vol 40, pp.3270-3280.Peled, M. Scharia, R. & Sondark, D. (1995) Thermal rearrangement of Hexabromo-cyclododecane (HBCD), Industrial Chemistry Library (1995) Vol 7, pp.92-99.
Sárvári (2010) was conducted in accordance with OECD guideline 102 and
EU Method A.1 under GLP conditions using the capillary method. A small
amount of the test item was heated in the electronic controlled sample
block and the temperature around the sample was displayed. The sample
was observed visually while raising the temperature. The initial and
final melting temperatures were determined. Using a linear heating rate
of 0.5 °C/min the melting point of Great Lakes CD-75P was found to be
185.9 ± 0.04 °C (95 % confidence interval), i.e. 459.0 K.
The following results were reported by the supporting information for
the melting point or range of the registered substance:
PBT Working Group (2008):
>= 172 — <= 205 °C
overall range for all isomers.
179 — 181 °C
for α-HBCDD isomer
170 — 172 °C
for β-HBCDD isomer
207 — 209 °C
for γ-HBCDD isomer
Barontini et al (2001):
Results for HBCDD 1.
Decomposition point above melting point.
Results for HBCDD 2.
Peled et al (1995):
Result for sample A
Result for sample B
Result for sample B-2
Result for sample C
Result for sample D
Melting points of pure isomers of HBCD (Peled et al, 1995):
HBCDD 1 (γ-isomer) = 208 -210
HBCDD 2 (β-isomer) = 169 -170
HBCDD 3 (α-isomer) = 171 -173
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.Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
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