Registration Dossier

Data platform availability banner - registered substances factsheets

Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Dissociation constant

Currently viewing:

Administrative data

Link to relevant study record(s)

Reference
Endpoint:
dissociation constant
Type of information:
experimental study
Adequacy of study:
key study
Study period:
15.01.2013 to 29.01.2013
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
test procedure in accordance with national standard methods
Justification for type of information:
Experimental test result performed using standard test guidelines
Qualifier:
according to guideline
Guideline:
other: as mention below
Principles of method if other than guideline:
Measurement of capacity of a compound to dissociate into respective ions.
GLP compliance:
no
Specific details on test material used for the study:
- Name of test material (IUPAC name): Sodium 2-amino-4,6-dinitrophenoxide
- Common name: Sodium picramate
- Molecular formula: C6H4N3NaO5
- Molecular weight: 221.1036 g/mol
- Smiles notation: [Na+].Nc1cc(cc(c1[O-])[N+](=O)[O-])[N+](=O)[O-]
- InChl: 1S/C6H5N3O5.Na/c7-4-1-3(8(11)12)2-5(6(4)10)9(13)14;/h1-2,10H,7H2;/q;+1/p-1
- Substance type: Organic
- Physical state: Solid
- Physical Appearance: red to brown moist powder
- Stability: Stable in recommended storage conditions
- Storage Conditions: 1. Ambient Temp (23 to 27 °C) √ (Store in a cool place. Keep containers tightly closed in a dry and well ventilated place)
Dissociating properties:
no
No.:
#1
pKa:
0
Temp.:
23 °C
Remarks on result:
other: 0.0000000000000032 = 0.320 x 10-14
No.:
#2
pKa:
0
Temp.:
23 °C
Remarks on result:
other: 0.0000000000000032 = 0.320x 10-14
No.:
#3
pKa:
0
Temp.:
23 °C
Remarks on result:
other: 0.00000000000000321 = 0.321 x 10-14
Conclusions:
The experimental pKa value for test chemical was determine to be 0.0000000000000032, 0.0000000000000032, 0.00000000000000321.The average pKa value was determine to be 0 at 23 deg C indicating that the chemical has no dissociation properties.
Executive summary:

The experimental pKa value for test chemical was determine to be 0.0000000000000032, 0.0000000000000032, 0.00000000000000321.The average pKa value was determine to be 0 at 23 deg C indicating that the chemical has no dissociation properties.

Description of key information

The experimental pKa value for test chemical was determine to be 0.0000000000000032, 0.0000000000000032, 0.00000000000000321.The average pKa value was determine to be 0 at 23 deg C indicating that the chemical has no dissociation properties.

Key value for chemical safety assessment

Additional information

The experimental pKa value for test chemical was determine to be 0.0000000000000032, 0.0000000000000032, 0.00000000000000321.The average pKa value was determine to be 0 at 23 deg C indicating that the chemical has no dissociation properties.