1-(2-methyl-4-(2-methylphenylazo)phenylazo)-2-naphthol

Flash point

Link to relevant study record(s)

Reference

Endpoint:

flash point, other

Remarks:

Solid substance

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2017-01-06 – 2017-01-06

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Justification for type of information:

Experimental result performed using standard methods of analysis

Qualifier:

according to guideline

Guideline:

other: Closed cup method using Pensky- Martens Flash Point Apparatus

Principles of method if other than guideline:

The flash point of a flammable liquid is the lowest temperature at which there will be enough flammable vapor to ignite when an ignition source is applied.

GLP compliance:

not specified

Type of method:

closed cup

Flash point apparatus:

Pensky-Martens apparatus

Specific details on test material used for the study:

- Name of test material: 1-(2-methyl-4-(2-methylphenylazo)phenylazo)-2-naphthol
- Molecular formula: C24 H20 N4 O
- Molecular weight: 380.449 g/mol
- Smiles notation: c12c(\N=N\c3c(cc(\N=N\c4c(cccc4)C)cc3)C)c(ccc1cccc2)O
- InChl: 1S/C24H20N4O/c1-16-7-3-6-10-21(16)26-25-19-12-13-22(17(2)15-19)27-28-24-20-9-5-4-8-18(20)11-14-23(24)29/h3-15,29H,1-2H3/b26-25+,28-27+
- Substance type: Organic
- Physical state: Solid

Key result

Flash point:

> 289 °C

Atm. press.:

976.3 hPa

Remarks on result:

other: No other detail available

Method Details		Observations	Remarks if, any
Method	Closed cup method using Pensky- Martens Flash Point Apparatus		The test item started giving brown coloured fumes with burning smell at 289 °C. Thus, the flash point of test item was inferred to be greater than 289 °C.
Principle of Flash point test	The flash point of a flammable liquid is the lowest temperature at which there will be enough flammable vapor to ignite when an ignition source is applied.
Type of method	Closed cup
Flash point apparatus	Abel's flash point apparatus Pensky- Martens Flash Point Apparatus
Quantity of chemical used	g/ml	4.998 g
Ignition source	Gas lighter/flame	Gas lighter
Atmospheric pressure	hPa	976.3hPa
Flash point (RESULT)	°C	289°C

Interpretation of results:

other: Non-flammable

Conclusions:

The flash point of 1-(2-methyl-4-(2-methylphenylazo)phenylazo)-2-naphthol(CAS No. 85-83-6) is 289°C at 976.3hPa.

Executive summary:

The flash point determination of 1-(2-methyl-4-(2-methylphenylazo)phenylazo)-2-naphthol (CAS No. 85-83- 6)was done following closed cup method using Pensky-Martens flash point apparatus.The test item started giving brown coloured fumes with burning smell at 289 °C. Thus, the flash point of test item was inferred to be greater than 289 °C at 976.3hPa.

The chemical 1-(2-methyl-4-(2-methylphenylazo)phenylazo)-2-naphthol (CAS No. 85-83 -6) is reported to have flash point of >289 degree C. This high flash point suggests that the chemical will be non-flammable.

Description of key information

The flash point determination of 1-(2-methyl-4-(2-methylphenylazo)phenylazo)-2-naphthol (CAS No. 85-83- 6)was done following closed cup method using Pensky-Martens flash point apparatus.The test item started giving brown coloured fumes with burning smell at 289 °C. Thus, the flash point of test item was inferred to be greater than 289 °C at 976.3hPa.

The chemical 1-(2-methyl-4-(2-methylphenylazo)phenylazo)-2-naphthol (CAS No. 85-83 -6) is reported to have flash point of 289 degree C. This high flash point suggests that the chemical will be non-flammable

Key value for chemical safety assessment

Flash point at 101 325 Pa:

289 °C

Additional information

The flash point determination of 1-(2-methyl-4-(2-methylphenylazo)phenylazo)-2-naphthol (CAS No. 85-83- 6) was done following closed cup method using Pensky-Martens flash point apparatus.The test item started giving brown coloured fumes with burning smell at 289 °C. Thus, the flash point of test item was inferred to be greater than 289 °C at 976.3hPa.

As per the available data for flash point from laboratory, the flash point value determined was 289 degree C. As the data from laboratory has K1 reliability thus considered as key study for the chemical safety assessment. Also based on criteria mentioned in CLP regulation the chemical has flash point >than 60 degree C hence the substance 1-(2-methyl-4-(2-methylphenylazo)phenylazo)-2-naphthol (CAS No. 85-83 -6) was considered to be non-flammable.