Disodium {sulfonylbis[4,1-phenylenediazene-2,1-diyl(1-ethyl-6-hydroxy-4-methyl-2-oxo-1,2-dihydropyridine-5,3-diyl)]}dimethanesulfonate

Vapour pressure

Administrative data

Endpoint:

vapour pressure

Type of information:

calculation (if not (Q)SAR)

Remarks:

Migrated phrase: estimated by calculation

Adequacy of study:

key study

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

other: see 'Remark'

Remarks:

Under COLUMN 2 “SPECIFIC RULES FOR ADAPTATION FROM COLUMN 1” in the REGULATION (EC) No 1907/2006 OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of 18 December 2006, it states the study does not need to be conducted if: "the melting point is above 300 degree C" As shown in Harlan Laboratory report Melting Temperature (D04336): Decomposition of Acid Yellow RN 2903 started at about 323 °C before melting occurred. Decomposition of Acid Yellow RN 2903 started at about 323 °C before melting occurred. The estimation of the vapor pressure of Acid Yellow RN 2903 was based on the EEC directive 92/69, Part A, Methods for the determination of physico-chemical properties, A.4 “Vapour Pressure”, EEC Publication No. L383, December 1992 and the OECD Guideline No. 104, “Vapour Pressure”, adopted July 27, 1995. Using the boiling point and the Modified Watson Correlation, the vapour pressure of Acid Yellow RN 2903 can be estimated to be 1.16 x 10-25 Pa at 25 °C based on the free acid form of the main component.

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2010

Report date:

2010

Materials and methods

Test guideline

Test guideline 1

Qualifier:

according to guideline

Guideline:

EU Method A.4 (Vapour Pressure)

Deviations:

no

Test guideline 2

Qualifier:

according to guideline

Guideline:

OECD Guideline 104 (Vapour Pressure Curve)

Deviations:

no

GLP compliance:

no

Type of method:

other: calculation

Test material

Test material information

Constituent 1

Reference substance name:

Acid Yellow RN 2903

IUPAC Name:

Acid Yellow RN 2903

Details on test material:

Identification: Acid Yellow RN 2903
Batch Number: Vers. Kilo 6, 26.05.2009
Purity: 65.7 %
Expiry Date: August 01, 2015
Storage Conditions: At room temperature at about 20 °C

Results and discussion

Vapour pressure

Temp.:

25 °C

Vapour pressure:

Pa

Remarks on result:

other: The calculated vapour pressure was found to be 1.16 E-25 Pa which is below the value given in the REACH Guideline (10 E-5 Pa)

Transition / decomposition

Transition / decomposition:

no

Any other information on results incl. tables

The boiling point of Acid Yellow RN 2903 was calculated for the free acid form of the main component to be approximately 772°C.

The boiling point of the salt form is supposably above 772°C.

 

Using the boiling point and theModified Watson Correlation, the vapour pressure of Acid Yellow RN 2903can beestimated to be

 

1.16 x 10^-25Pa at 25 °C

 

based on the free acid form of the main component.

 

Applicant's summary and conclusion

Conclusions:

Using the boiling point and the Modified Watson Correlation, the vapour pressure of Acid Yellow RN 2903 can be estimated to be 1.16 x 10-25 Pa at 25 °C based on the free acid form of the main component.

Executive summary:

Using the boiling point and the Modified Watson Correlation, the vapour pressure of Acid Yellow RN 2903 can be estimated to be

 

1.16 x 10^-25Pa at 25 °C

 

based on the free acid form of the main component.