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Auto flammability

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Reference
Endpoint:
auto-ignition temperature, other
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
comparable to guideline study
Justification for type of information:
Experimental test result performed using standard test guidelines
Reference:
Composition 0
Qualifier:
according to
Guideline:
other: Lowest temperature determined at which substance vaporizes to form an ignitable mixture in air
Principles of method if other than guideline:
Lowest temperature determined at which substance vaporizes to form an ignitable mixture in air
GLP compliance:
not specified
Test material information:
Composition 1
Specific details on test material used for the study:
- Name of the test chemical: Trisodium 2-[(E)-2-(3-methyl-5-oxo-1-{4-[2-(sulfonatooxy)ethanesulfonyl]phenyl}-4,5-dihydro-1H-pyrazol-4-yl)
diazen-1-yl]naphthalene-1,5-disulfonate
- IUPAC name: trisodium 2-[(E)-2-(3-methyl-5-oxo-1-{4-[2-(sulfonatooxy)ethanesulfonyl]phenyl}-4,5-dihydro-1H-pyrazol-4-yl)diazen-1-yl]naphthalene -1,5-disulfonate
- Molecular Formula: C22H17N4Na3O13S4
- Molecular Weight: 742.6253 g/mol
- SMILES Notation: [Na+].CC1C(N=Nc2ccc3c(S(=O)(=O)[O-])cccc3c2S(=O)(=O)[O])C(=O)N(c2ccc(S(=O)(=O)CCOS(=O)(=O)[O-])cc2)N=1.[Na+].[Na+]
- InChI: 1S/C22H20N4O13S4.3Na/c1-13-20(22(27)26(25-13)14-5-7-15(8-6-14)40(28,29)12-11-39-43(36,37)38)24-23-18-10-9-16-17(21(18)42
(33,34)35)3-2-4-19(16)41(30,31)32;;;/h2-10,20H,11-12H2,1H3,(H,30,31,32)(H,33,34,35)(H,36,37,38);;;/q;3*+1/p-3/b24-23+;;;
- Substance Type: Organic
- Physical State: Solid
Key result
Remarks on result:
other: The given chemical (CAS no. 20298-05-9) ignites only when the flame of bunsen burner having temperature of 950°C is brought in contact with it.Thus it can be concluded that substance is flammable only at high temperature of about 950°C.
Conclusions:
Trisodium 2-[(E)-2-(3-methyl-5-oxo-1-{4-[2-(sulfonatooxy)ethanesulfonyl]phenyl}-4,5-dihydro-1H-pyrazol-4-yl)diazen-1-yl]naphthalene-1,5-disulfonate did not catch fire on being exposed to air at room temperature of 27°C pressure of 966 hPa. This indicates that Trisodium 2-[(E)-2-(3-methyl-5-oxo-1-{4-[2- (sulfonatooxy)ethanesulfonyl]phenyl}-4,5-dihydro-1H-pyrazol-4-yl) diazen-1-yl]naphthalene-1,5-disulfonate is not auto-flammable.
Executive summary:

Trisodium 2-[(E)-2-(3-methyl-5-oxo-1-{4-[2-(sulfonatooxy)ethanesulfonyl]phenyl}-4,5-dihydro-1H-pyrazol-4-yl)diazen-1-yl]naphthalene-1,5 -disulfonate did not catch fire on being exposed to air at room temperature of 27°C pressure of 966 hPa. This indicates that Trisodium 2-[(E)-2-(3-methyl-5-oxo-1-{4-[2- (sulfonatooxy)ethanesulfonyl]phenyl}-4,5-dihydro-1H-pyrazol-4-yl) diazen-1-yl]naphthalene-1,5-disulfonate is not auto-flammable.

Description of key information

Trisodium 2-[(E)-2-(3-methyl-5-oxo-1-{4-[2-(sulfonatooxy)ethanesulfonyl]phenyl}-4,5-dihydro-1H-pyrazol-4-yl)diazen-1-yl]naphthalene-1,5 -disulfonate did not catch fire on being exposed to air at room temperature of 27°C pressure of 966 hPa. This indicates that Trisodium 2-[(E)-2-(3-methyl-5-oxo-1-{4-[2- (sulfonatooxy)ethanesulfonyl]phenyl}-4,5-dihydro-1H-pyrazol-4-yl) diazen-1-yl]naphthalene-1,5-disulfonate is not auto-flammable.

Key value for chemical safety assessment

Additional information

Trisodium 2-[(E)-2-(3-methyl-5-oxo-1-{4-[2-(sulfonatooxy)ethanesulfonyl]phenyl}-4,5-dihydro-1H-pyrazol-4-yl)diazen-1-yl]naphthalene-1,5 -disulfonate did not catch fire on being exposed to air at room temperature of 27°C pressure of 966 hPa. This indicates that Trisodium 2-[(E)-2-(3-methyl-5-oxo-1-{4-[2- (sulfonatooxy)ethanesulfonyl]phenyl}-4,5-dihydro-1H-pyrazol-4-yl) diazen-1-yl]naphthalene-1,5-disulfonate is not auto-flammable.