Sodium 4-(4-(2-hydroxynaphthalenylazo)phenylazo)benzenesulphonate

Auto flammability

Link to relevant study record(s)

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

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 test material: Sodium 4-(4-(2-hydroxynaphthalenylazo)phenylazo)benzenesulphonate
- IUPAC name: Sodium 4-(4-(2-hydroxynaphthalenylazo)phenylazo)benzenesulphonate
- Molecular formula: C22H15N4O4S.Na
- Molecular weight: 455.448 g/mole
- Smiles : c12c(\N=N\c3ccc(\N=N\c4ccc(S(O)(=O)=O)cc4)cc3)c(ccc1cccc2)O.[Na+]
- Inchl: 1S/C22H16N4O4S.Na/c27-21-14-5-15-3-1-2-4-20(15)22(21)26-25-17-8-6-16(7-9-17)23-24-18-10-12-19(13-11-18)31(28,29)30;/h1-14,27H, (H,28,29,30);/q;+1/b24-23+,26-25+;
- Substance type: Organic
- Physical state: Solid powder (red to brown)

Key result

Remarks on result:

other: Sodium 4-(4-(2-hydroxynaphthalenylazo)phenylazo)benzenesulphonate ignites only when the flame of bunsen burner having temp of 950°C is brought in contact with it.Thus it can be concluded that substance is flammable only at high temp of about 950°C.

Conclusions:

Sodium 4-(4-(2-hydroxynaphthalenylazo)phenylazo)benzenesulphonate did not catch fire on being exposed to air at room temperature of 27°C pressure of 966 hPa. This indicates that Sodium 4-(4-(2-hydroxynaphthalenylazo)phenylazo)benzenesulphonate is not auto-flammable.

Executive summary:

Sodium 4-(4-(2-hydroxynaphthalenylazo)phenylazo)benzenesulphonate did not catch fire on being exposed to air at room temperature of 27°C pressure of 966 hPa. This indicates that Sodium 4-(4-(2-hydroxynaphthalenylazo)phenylazo)benzenesulphonate is not auto-flammable.

Description of key information

Sodium 4-(4-(2-hydroxynaphthalenylazo)phenylazo)benzenesulphonate did not catch fire on being exposed to air at room temperature of 27°C pressure of 966 hPa. This indicates that Sodium 4-(4-(2-hydroxynaphthalenylazo)phenylazo)benzenesulphonate is not auto-flammable.

Additional information

Sodium 4-(4-(2-hydroxynaphthalenylazo)phenylazo)benzenesulphonate did not catch fire on being exposed to air at room temperature of 27°C pressure of 966 hPa. This indicates that Sodium 4-(4-(2-hydroxynaphthalenylazo)phenylazo)benzenesulphonate is not auto-flammable.