SODIUM CARBONATE CAS N°: 497-19-8 - UNEP Chemicals
SODIUM CARBONATE CAS N°: 497-19-8 - UNEP Chemicals
SODIUM CARBONATE CAS N°: 497-19-8 - UNEP Chemicals
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OECD SIDS <strong>SODIUM</strong> <strong>CARBONATE</strong><br />
3. ENVIRONMENTAL FATE FATE AND PATHWAYS Id <strong>497</strong>-<strong>19</strong>-8<br />
Date <strong>19</strong>.02.2003<br />
08.05.2002<br />
3.3.2 DISTRIBUTION<br />
Remark : See 3.1.2 and 3.3.1 .<br />
16.05.2002<br />
3.4 MODE OF DEGRADATION IN ACTUAL USE<br />
08.05.2002<br />
3.5 BIODEGRADATION<br />
Solid sodium carbonate has a negligible vapour pressure and for this<br />
reason it will not be distributed to the atmosphere.<br />
If sodium carbonate is emitted to water it will remain in the water phase. If<br />
the pH is decreased then carbonic acid (H2CO3 or CO2) can be formed. If<br />
the concentration of carbon dioxide water is above the water solubility limit,<br />
the carbon dioxide will distribute to the atmosphere.<br />
If sodium carbonate is emitted to soil it can escape to the atmosphere as<br />
CO2 (see above), precipitate as a metal carbonate, form complexes or stay<br />
in solution.<br />
Remark : Sodium carbonate is a inorganic substance which can not be oxidized or<br />
biodegraded by microorganisms. A biodegradation test would not generate<br />
valid or useful data.<br />
08.05.2002<br />
3.6 BOD5, COD OR BOD5/COD RATIO<br />
Remark : Not applicable, see 3.5.<br />
08.05.2002<br />
3.7 BIOACCUMULATION<br />
Remark : Not bioaccumulable. Log Po/w is not applicable for an inorganic compound<br />
which dissociates.<br />
08.05.2002<br />
3.8 ADDITIONAL REMARKS<br />
<strong>UNEP</strong> PUBLICATIONS 37
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