POTASSIUM CHLORIDE CAS N°: 7447-40-7

OECD SIDS
POTASSIUM CHLORIDE
Date: 30-Mar-2003
3. Environmental fate and pathw ays SUBSTANCE ID: 7447-40-7
3.1.1 Photodegradation
Remark:
Source:
Reliability:
Flag:
01-MAR-2001
KCl as an inorganic salt is not subjected to
further degradation processes.
Norsk Hydro ASA
(1) reliable without restrictions
Key study for SIDS
3.1.2 Stability in Water
Remark:
Potassium chloride is highly water-soluble.
Dissociates in water to K + and Cl - .
Source:
Norsk Hydro ASA
Reliability: (1) reliable without restrictions
Flag:
Key study for SIDS
01-MAR-2001 (26)(41)(79)
3.1.3 Stability in Soil
Remark:
Source:
Reliability:
Flag:
01-MAR-2001
Potassium chloride is stable in soil.
Information on adsorption and desorption of
potassium chloride in soil is reported under item
3.3.1 Transport.
Norsk Hydro ASA
(1) reliable without restrictions
non confidential
3.2 Monitoring Data (Environment)
Type of
measurement:
Medium:
Concentration:
Background
Minerals and soils
Sylvite is a naturally occurring mineral with more
than 99 % KCl. Other KCl principal minerals are
carnallite (KCl⋅MgCl 2 ⋅6H 2 O) with approx. 25 % KCl,
and kainite (KCl⋅MgSO 4 ⋅3H 2 O) with approx. 30 % KCl.
Potassium is the seventh most common element,
composing 2.4 % of the earth’s crust by weight. The
amount of K in the topsoil varies in the range of
0.2-3.3 %. Chloride is the eleventh most common
element, composing approx. 1-2 % of the earth’s
crust by weight.
Source:
Norsk Hydro ASA
Reliability: (1) reliable without restrictions
Flag:
Key study for SIDS
01-MAR-2001 (20)(26)
Type of
measurement:
Medium:
Concentration:
Source:
Reliability:
Flag:
Background
Seawater
380 mg/l potassium (K + ) and 19,000 mg/l chloride
(Cl - ).
Norsk Hydro ASA
(1) reliable without restrictions
Key study for SIDS
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