Registration Dossier
Registration Dossier
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EC number: 692-061-0 | CAS number: 1207435-39-9
Dissociation constant
Administrative data
Link to relevant study record(s)
Description of key information
The study has been waived in accordance with REACH Annex IX section 7.16. column 2. It is scientifically not possible to perform testing because analytical methods are not sensitive enough.
Key value for chemical safety assessment
Additional information
Some information concerning dissociation constants from components of bio-oils is found in literature (Oasmaa et al.2010).
Chemical Composition of a Pine Fast Pyrolysis Bio-oil |
|
fast pyrolysis bio-oil (pine) |
pKa |
water |
15.7 |
acids |
3-5 |
formic acid |
3.8 |
acetic acid |
4.7 |
propionic acid |
|
glycolic acid |
3.8 |
alcohols |
15-16 |
ethylene glycol |
15 |
methanol |
16 |
aldehydes, ketones, furans, and pyrans |
16-36 |
non-aromatic aldehydes |
17 |
aromatic aldehydes |
17 |
non-aromatic ketones |
20 |
furans |
32-36 |
pyrans |
32-34 |
sugars |
3-16 |
anhydro-β-D-arabino-furanose, 1,5 - |
|
anhydro-β-D-glucopyranose (levoglucosan) |
|
dianhydro-R-D-glucopyranose, 1,4:3,6- |
|
hydroxy, sugar acids |
3-5 |
LMM lignin |
9-10 |
catechols |
|
lignin-derived phenols |
10 |
guaiacols (methoxy phenols) |
10 |
HMM lignin |
|
extractives |
7-16 |
fatty acids |
9-10 |
triglyserides |
|
resin acids |
7 |
REFERENCES:
Oasmaa et al 2010: Acidity of Biomass Fast Pyrolysis Bio-oils. Energy & Fuels 2010, 24, 6548-6554
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