Disodium [5-chloro-3-[[4,5-dihydro-3-methyl-5-oxo-1-(3-sulphophenyl)-1H-pyrazol-4-yl]azo]-2-hydroxybenzene-1-sulphonato(4-)]hydroxychromate(2-)

Auto flammability

Link to relevant study record(s)

Reference

Endpoint:

relative self-ignition temperature (solids)

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

Qualifier:

according to guideline

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

Specific details on test material used for the study:

- Name of the test material (IUPAC Name): Disodium [5-chloro-3-[[4,5-dihydro-3-methyl-5-oxo-1-(3-sulphophenyl)-1H-pyrazol-4-yl]azo]-2-hydroxybenzene-1-sulphonato(4-)]hydroxychromate(2-)
- Common Name: Acid Red 183
- Molecular formula: C16H13ClCrN4O9S2
- Molecular weight: 599.835 g/mol
- Smiles notation: N1(c2cc(ccc2)S(=O)(=O)[O-])C([C@@-](\N=N\c2c(c(cc(c2)Cl)S(=O)(=O)[O-])[O-])C(=N1)C)=O.[Cr].[Na+].[Na+].[OH-]
- InChl: 1S/C16H12ClN4O8S2.Cr.2Na.H2O/c1-8-14(19-18-12-5-9(17)6-13(15(12)22)31(27,28)29)16(23)21(20-8)10-3-2-4-11(7-10)30(24,25)26;;;;/h2-7,22H,1H3,(H,24,25,26)(H,27,28,29);;;;1H2/q-1;;2*+1;/p-4/b19-18+;;;;
- Substance type: Organic
- Physical state: Solid

Key result

Remarks on result:

other: Chemical (CAS no. 6408-31-7) 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:

Disodium [5 -chloro-3 -[[4,5 -dihydro-3 -methyl-5 -oxo-1 -(3 -sulphophenyl)-1H-pyrazol-4 -yl]azo]-2 -hydroxybenzene-1 -sulphonato(4 -)]hydroxychromate(2 -) did not catch fire on being exposed to air at room temperature of 27°C pressure of 966 hPa. This indicates that Disodium [5 -chloro-3 -[[4,5 -dihydro-3 -methyl-5 -oxo-1 -(3 -sulphophenyl)-1H-pyrazol-4 -yl]azo]-2 -hydroxybenzene-1 -sulphonato(4 -)]hydroxychromate(2 -) is not auto-flammable.

Executive summary:

Disodium [5 -chloro-3 -[[4,5 -dihydro-3 -methyl-5 -oxo-1 -(3 -sulphophenyl)-1H-pyrazol-4 -yl]azo]-2 -hydroxybenzene-1 -sulphonato(4 -)]hydroxychromate(2 -) did not catch fire on being exposed to air at room temperature of 27°C pressure of 966 hPa. This indicates that Disodium [5 -chloro-3 -[[4,5 -dihydro-3 -methyl-5 -oxo-1 -(3 -sulphophenyl)-1H-pyrazol-4 -yl]azo]-2 -hydroxybenzene-1 -sulphonato(4 -)]hydroxychromate(2 -) is not auto-flammable.

Description of key information

Disodium [5-chloro-3 -[[4,5 -dihydro-3 -methyl-5 -oxo-1 -(3 -sulphophenyl)-1H-pyrazol-4 -yl]azo]-2 -hydroxybenzene-1 -sulphonato(4 -)]hydroxychromate(2 -) did not catch fire on being exposed to air at room temperature of 27°C pressure of 966 hPa. This indicates that Disodium [5 -chloro-3 -[[4,5 -dihydro-3 -methyl-5 -oxo-1 -(3 -sulphophenyl)-1H-pyrazol-4 -yl]azo]-2 -hydroxybenzene-1 -sulphonato(4 -)]hydroxychromate(2 -) is not auto-flammable.

Additional information

Disodium [5-chloro-3 -[[4,5 -dihydro-3 -methyl-5 -oxo-1 -(3 -sulphophenyl)-1H-pyrazol-4 -yl]azo]-2 -hydroxybenzene-1 -sulphonato(4 -)]hydroxychromate(2 -) did not catch fire on being exposed to air at room temperature of 27°C pressure of 966 hPa. This indicates that Disodium [5 -chloro-3 -[[4,5 -dihydro-3 -methyl-5 -oxo-1 -(3 -sulphophenyl)-1H-pyrazol-4 -yl]azo]-2 -hydroxybenzene-1 -sulphonato(4 -)]hydroxychromate(2 -) is not auto-flammable.