SODIUM CARBONATE CAS N°: 497-19-8 - UNEP Chemicals

OECD SIDS SODIUM CARBONATE
2. PHYSICO-CHIMICAL DATA Id 497-19-8
Date 19.02.2003
2.1 MELTING POINT
Value : = 851 °C
Decomposition : yes, at > 400 °C
Sublimation :
Method : other: no information available
Year :
GLP : no
Test substance : no data
Reliability : (2) valid with restrictions
Secondary literature, but generally accepted handbooks.
08.05.2002 (7) (25)
2.2 BOILING POINT
Remark : Not applicable, as the test substance decomposes upon heating.
08.05.2002 (7) (25)
2.3 DENSITY
Type : relative density
Value : = 2.532 at 20 °C
Method : other: no information available
Year : 1986
GLP : no
Test substance : no data
Reliability : (2) valid with restrictions
Secondary literature, but generally accepted handbooks.
08.05.2002 (7)
2.3.1 GRANULOMETRY
Remark : The average particle size diameter (d50) of light sodium carbonate is in the
range of 90 to 150 µm and of dense sodium carbonate is in the range of
250 to 500 µm.
31.05.2002
2.4 VAPOUR PRESSURE
Remark : Sodium carbonate is an inorganic solid and for this reason the vapour
pressure of sodium carbonate is negligible. Furthermore it is technically not
possible to determine the vapour pressure due to decomposition (when
heated).
14.08.2001
2.5 PARTITION COEFFICIENT
Remark : The octanol/water partition coefficient is not relevant for an inorganic
substance which dissociates.
14.08.2001
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