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Physical & Chemical properties

Stability: thermal, sunlight, metals

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Description of key information

According to “ANNEX IX- STANDARD INFORMATION REQUIREMENTS FOR SUBSTANCES MANUFACTURED OR IMPORTED IN QUANTITIES OF 100 TONNES OR MORE, study for Stability and reactivity is only required if stability of the substance is considered to be critical.
Expert Judgement
Sodium isobutyl xanthate is stable under normal ambient and anticipated storage and handling conditions of temperature and pressure. Sodium isobutyl xanthate powder and pellets are stable if stored under dry, cool conditions. Incompatible with oxidising agents (eg. hypochlorites) and acids (eg. nitric acid).
However, it is hygroscopic and when exposed to moisture in air it decomposes, releasing carbon disulphide.
Sodium isobutyl xanthate is stable on storage and does not react with its container under normal conditions of use and storage.
Therefore testing for Stability: thermal, sunlight, metals does not need to be performed.

Additional information

According to “ANNEX IX- STANDARD INFORMATION REQUIREMENTS FOR SUBSTANCES MANUFACTURED OR IMPORTED IN QUANTITIES OF 100 TONNES OR MORE, study for Stability and reactivity is only required if stability of the substance is considered to be critical.

Expert Judgement

Sodium isobutyl xanthate is stable under normal ambient and anticipated storage and handling conditions of temperature and pressure. Sodium isobutyl xanthate powder and pellets are stable if stored under dry, cool conditions. Incompatible with oxidising agents (eg. hypochlorites) and acids (eg. nitric acid).

However, it is hygroscopic and when exposed to moisture in air it decomposes, releasing carbon disulphide. Sodium isobutyl xanthate is stable on storage and does not react with its container under normal conditions of use and storage.

Therefore testing for Stability: thermal, sunlight, metals does not need to be performed.

Justification for classification or non-classification

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

Thermal stability

R5 Heating may cause an explosion.

R6 Explosive with or without contact with air.

 

CLP

Self-reactive substances and mixures

H240: Heating may cause an explosion.

H241: Heating may cause a fire or explosion.

H242: Heating may cause a fire.

Self-react. Type A

Self-react. Type B

Self-react. Type C

Self-react. Type D

Self-react. Type E

Self-react. Type F

Self-react. Type G

 

 

It is concluded that none of the above phrase has not to be assigned to Sodium isobutyl xanthate and   does not meet the criteria to be classified for Stability: thermal, sunlight, metals.