CAS No.25637-99-4,Hexabromocyclododecane Suppliers,MSDS download

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Basic Information

Molecular Structure:
CAS No.:	25637-99-4
Name:	Hexabromocyclododecane

Formula:	C₁₂H₁₈Br₆
Molecular Weight:	641.66
Synonyms:	BRE 5300;Bromkal 73-6CD;CD 75;CD 75P;FR 104;FR 104 (fireproofing agent);FR 1206ILM;FR-CD;HBCD-LM;HBCD-LMS;HBCD-SP 75;HP 900G;Hexabromocyclododecane;Myflam11645;Nicca Fi-None CG 1;NiccaFi-None TS 88;Pyroguard F 800;Pyroguard SR 103;Pyroguard SR 103A;Pyrovatex 3887;SP 75;Safron 5261;Saytex HBCD;SaytexHBCD-LM;Saytex HBCD-SF;Saytex HP 900;Saytex HP 900G;YM 88;
EINECS:	247-148-4
Density:	2.145g/cm³
Melting Point:	188-191 °C
Boiling Point:	505.2°C at 760 mmHg
Flash Point:	249.5°C
Solubility:	65.6μg/L at 20℃
Appearance:	COA
Hazard Symbols:	R36/37/38:;
Risk Codes:	Xi:Irritant; "> Xi:Irritant;
Safety:	22-24/25
PSA:	0.00000
LogP:	6.92160

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Chemistry

Hexabromocyclododecane (HBCD or HBCDD) is a brominated flame retardant. It consists of twelve carbon, eighteen hydrogen, and six bromine atoms tied to the ring. Its primary application is in extruded (XPS) and expanded (EPS) polystyrene foam that is used as thermal insulation in the building industry.

Uses

Typical HBCD levels in EPS are 0.7% and in XPS 2.5%. At present, according to BSEF, the brominated flame retardant industry panel, HBCD is the only suitable flame retardant for these applications. Any other flame retardant would likely need higher load levels in the polystyrene foam. Other uses are upholstered furniture,

Toxicity Data With Reference

HBCD's toxicity and its harm to the environment are currently discussed.European Chemicals Agency decided to include HBCD in the SVHC list[3], Substances of Very High Concern, within the REACH framework. HBCD has been found widely present in biological samples from remote areas and supporting evidences for its classification as Persistent, Bioaccumulative and Toxic (PBT) and undergoes long-range environmental transportation.

Due to its persistence, toxicity, and ecotoxicity, a global ban on HBCD is currently being considered under the framework of the Stockholm Convention on Persistent Organic Pollutants.[6] HBCD is also included on the list of substances added to a proposal to revise the RoHS (Restriction of Hazardous Substances) directive.[7] There is a large and increasing stock of HBCD in the anthroposphere, mainly in EPS and XPS insulation boards.[8]