Identification, classification and labelling, legal status and use restrictions

• Author: Clemm, Christan; Löw, Clara; Baron, Yifaat; Moch, Katja; Möller, Martin; Köhler, Andreas R; Gensch, Carl-Otto; Deubzer, Otmar
• Pages: 12-18

RoHS Annex II Dossier, final

Diantimony trioxide (flame retardant)

12

1 IDENTIFICATION, CLASSIFICATION AND LABELLING, LEGAL STATUS AND

USE RESTRICTIONS

Identification

1.1.1 Name, other identifiers, and composition of the substance

The information compiled in the following table on the substance identity of diantimony trioxide

originates from the ECHA information on substances database3 and the European Risk Assessment

Report (EU RAR) on diantimony trioxide from 2008.4

Table

1-1: Substance identity and composition of diantimony trioxide

Chemical name

Diantimony trioxide

EC number 215-175-0

CAS number 1309-64-4

Index number in Annex VI

of the CLP Regulation 051-005-00-X

Molecular formula Sb2O3

Molecular weight 291,49 g/mol

IUPAC name oxostibanyl stibinate, dioxodistiboxane

Synonyms Antimony (III) oxide

Antimony (3+) oxide

Antimony oxide (Sb2O3)

Antimony peroxide

Antimony trioxide

Antimony oxide

Antimony sesquioxide

Antimony white

Flowers of antimony

Senarmontite

Valentinite

Sesquioxide

C.I. Pigment White 11

C.I. 77052

ATO, PATOX

Structural formula

Degree of purity ECHA database of registered substances lists different compositions and

indicates different impurities

The EU RAR indicates the purity for diantimony trioxide at 99.3 to 99.5 % (with

the exception of wetted forms, for which a lower specification limit of 95 % was

given)

Remarks None

Source:

European Chemicals Agency ECHA, Brief Profile: Entry for Diantimony trioxide (2018), https://echa.europa.eu and EU RAR

(2008)

3 ECHA Brief Profile: Entry for Diantimony trioxide; https://echa.europa.eu/de/brief-profile/-/briefprofile/100.013.796,

last viewed 19.04.2018

4 European Union Risk Assessment Report EU RAR (2008): Diantimony trioxide, November 2008;

http://www.echa.europa.eu/documents/10162/553c71a9-5b5c-488b-9666-adc3af5cdf5f, last viewed 19.04.2018