Sodium O-ethyl dithiocarbonate

Flammability

Link to relevant study record(s)

Reference

Reference 1

Endpoint:

flammable solids

Data waiving:

study technically not feasible

Justification for data waiving:

the study does not need to be conducted because the substance is a solid

other:

Reference 2

Endpoint:

flammable gases

Type of information:

other: published data

Adequacy of study:

key study

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

study well documented, meets generally accepted scientific principles, acceptable for assessment

Justification for type of information:

Due to the decomposition of SEX 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

Qualifier:

no guideline available

Principles of method if other than guideline:

no data

GLP compliance:

not specified

Parameter:

lower explosion limit

Value:

1.3 % (not further specified)

Parameter:

upper explosion limit

Value:

50 % (not further specified)

Interpretation of results:

highly flammable

Remarks:

Migrated information

Conclusions:

CS2 is flammable in a range between 1.3 and 50 % (v/v) in air.

Description of key information

Not applicable to solid  SEX  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 SEX  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

SEX 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 SEX 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 classification is made because SEX 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 SEX in section 2.1 and 2.2 in IUCLID 6, 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 SEX  meet the criteria to be classified for flammability.

 

F; R11 Highly flammable

H228: Flammable solid