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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Physical & Chemical properties

Explosiveness

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Administrative data

Endpoint:
explosiveness
Type of information:
migrated information: read-across from supporting substance (structural analogue or surrogate)
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Acceptable, well-documented study report which meets basic scientific principles. The test substance rapidly oxidises to indigo on contact with air.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1989
Report date:
1989

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
other: VDE 0165; VDI 2263 Hartmann-Rohr
GLP compliance:
not specified

Test material

Constituent 1
Reference substance name:
Indigo
IUPAC Name:
Indigo
Details on test material:
- Name of test material: Indigo
- Molecular formula: C16H10N2O2
- Molecular weight: 262.2628
- Smiles notation: O=C3c4ccccc4NC3=C2Nc1ccccc1C2=O
- InChl: InChI=1/C16H10N2O2/c19-15-9-5-1-3-7-11(9)17-13(15)14-16(20)10-6-2-4-8-12(10)18-14/h1-8,17-18H
- Structural formula attached as image file: see Fig. 1 under item 4.1
- Substance type: active ingredient
- Physical state: solid

Results and discussion

Small-scale preliminary testsopen allclose all
Parameter:
other: More sensitive to shock than m-dinitrobenzene
Remarks:
migrated information
Remarks on result:
other: no data
Parameter:
other: More sensitive to friction than m-dinitrobenzene
Remarks:
migrated information
Remarks on result:
other: no data
Parameter:
other: Explosive under influence of flame
Remarks:
migrated information
Remarks on result:
negative (not further specified)
Parameter:
other: Explosive (not specified)
Remarks:
migrated information
Remarks on result:
negative (not further specified)

Applicant's summary and conclusion

Interpretation of results:
non explosive
Remarks:
Migrated information
Executive summary:

Results for Indigo:

Flash point > 250°C

Ignition point > 600°C

Flammability: with heating rod (800°C)

DTA: Onset temperature: 295°C

Maximum reaction: 330°C

Released heat: 100 J/g

Based on structural increments and the above data, indigo and likely vat indigo sodium salt is not explosive.