Registration Dossier
Registration Dossier
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EC number: 246-805-2 | CAS number: 25306-75-6
Flammability
Administrative data
Link to relevant study record(s)
Description of key information
Not applicable to solid Sodium isobutyl xanthate which in the presence of moisture and/or heat decomposes to carbon disulphide, alcohol, sodium carbonate and trithiocarbonate.
Carbon disulphide (CAS number 75–15–0) is the major decomposition product and has a low autoignition point and is highly flammable.
Expert Judgement
Due to the decomposition of Sodium isobutyl xanthate when is heated this substance is not considered to exhibit flammability but the major decomposition product Carbon disulphide (CAS number 75–15–0) have to be considered.
Therefore testing for flammability does not need to be performed.
Key value for chemical safety assessment
- Flammability:
- highly flammable
Additional information
Sodium isobutyl xanthate in the presence of moisture and/or heat decomposes. Carbon disulphide (CAS number 75–15–0) is the major decomposition product This classification is made because Sodium isobutyl xanthate on contact with moisture/water are prone to self-combustion asa result of exothermic decomposition to CS2 which is highly flammable.
Justification for classification or non-classification
This classificationismade because Sodium isobutyl xanthate on contact with moisture/water are prone to self-combustion asa result of exothermic decomposition to CS2 which is highly flammable.
Based on the hazard assessment of Sodium isobutyl xanthate in section 2.1 and 2.2 in IUCLID 5.4, available data for the substance and according to the criteria described in Directive 67/548/EEC and in the Regulation (EC) No 1272/2008 on classification, labelling and packaging of substances and mixtures (CLP Regulation):
Directive 67/548 |
E;R2 Risk of explosion by shock, friction, fire or other sources of ignition E;R3 Extreme risk of explosion by shock, friction, fire or other source of ignition O; R7 May cause fire O; R8 Contact with combustible material may cause fire O; R9 Explosive when mixed with combustible material F+; R12 Extremely flammable F; R11 Highly flammable F; R15 Contact with water liberates extremely flammable gas F; R17 Spontaneously flammable in air R10 Flammable |
CLP Regulation |
H242 Org. Perox. CD Heating may cause a fire H242 Org. Perox. EF Heating may cause a fire Gas: H270 Ox. Gas 1: May cause or intensify fire; oxidiser Liquid: H271 Ox. Liq 1 May cause fire or explosion; strong oxidiser Solid: H271 Ox. Sol 1 May cause fire or explosion; strong oxidiser H272: May intensify fire; oxidiser Gas: H220 Flam. Gas 1: extremely flammable gas Gas: H221 Flam. Gas 2: flammable gas Aerosol: H222 Category 1: extremely flammable aerosol Aerosol:H223 category 2: flammable aerosol Liquid: H224 Flam. Liq. 1 H242 Self-react. CD: Heating may cause a fire H242 Self-react. EF: Heating may cause a fire None Self-react. G Liquid: H224 Flam. Liq. 1, if initial boiling point <35ºC Liquid: H225 Flam. Liq. 2, if initial boiling point >35ºC Solid: H228: Flammable solid Solid: H250, Pyr. Liq. 1: Catches fire spontaneously if exposed to air Liquid: H250, Pyr. Sol. 1: Catches fire spontaneously if exposed to air Liquid: H224 Flam. Liq. 1, if flashpoint<23ºC and initial boiling point<35ºC Liquid: H225 Flam. Liq. 2, if flashpoint<23ºC and initial boiling point>35ºC Liquid: H226 Flam. Liq. 3, if flashpoint>23ºC H200: unstable explosive H201: explosive; mass explosion hazard H202: explosive; severe projection hazard H203: explosive; fire, blast or projection hazard H204: Fire or projection hazard H205: may mass explode in fire H280: contains gas under pressure; may explode if heated H281: contains refrigerated gas; may cause cryogenic burns or injury H240: heating may cause an explosion H241: Heating may cause a fire or explosion H251: Self-heating; may catch fire H252: Self-heating in large quantities; may catch fire H260: In contact with water releases flammable gases which may ignitespontaneously H261: In contact with water releases flammable gases H290: May be corrosive to metals |
It is concluded that Sodium isobutyl xanthate meet the criteria to be classified for flammability.
R11 Highly flammable
H228: Flammable solid
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