POTASSIUM CHLORIDE CAS N°: 7447-40-7

OECD SIDS POTASSIUM CHLORI
Date: 30-MAR-2003
3. Environmental Fate and Pathways Substance ID: 7447-40-7
01-MAR-2001 (68)
Type of
measurement: Background
Medium:
Freshwater
Concentration: Mean composition of river waters of the world
contain 2.3 mg/l potassium (K + ) and 8.3 mg/l
chloride (Cl - ).
Remarks:
The concentrations of potassium and chloride of the
surface waters of the world is highly variable in
relation to ionic influences of drainage and
exchange from surrounding land, atmospheric sources
derived from the land, ocean, and human activity.
The spatial and temporal distribution of potassium
and chloride in natural freshwater lakes is
relatively uniform as their concentrations within a
lake undergo minor changes from biotic utilization
or biotically mediated changes.
Source:
Norsk Hydro ASA
Reliability: (1) reliable without restrictions
Flag:
Key study for SIDS
01-MAR-2001 (81)
Type of
measurement:
Medium:
Concentration:
Background
Animals
Potassium and chloride are essential constituents
and two of the most abundant ions in all animal
species. The concentrations of these ions as
predominant extracellular and intracellular
electrolytes will differ somewhat among different
organisms and cell types.
In adult humans, the total body potassium is
approx. 3.5 mol (135 g). 98 % of this is located
intracellularly (mostly within muscle cells), at a
concentration of 150 mmol/l. The extracellular
potassium concentration is approx. 4 mmol/l.
Total body chloride in adult humans is approx. 2.1
mol (75 g) or 33 mmol/kg body weight. 80 % of this
is located extracellularly, at a concentration of
120 mmol/l. The intracellular concentration of
chloride is approx. 3-4 mmol/l.
Source:
Norsk Hydro ASA
Reliability: (1) reliable without restrictions
Flag:
Key study for SIDS
01-MAR-2001 (13)(32)
Type of
measurement:
Medium:
Concentration:
Background
Plants
Potassium is a primary nutrient, and chloride is a
micronutrient for plants (Cl is a major element
for some coastal plants, e.g. coconut). The uptake
of K and Cl by plants will vary with crop species,
climate and soil conditions. Examples on amount of
K removed per ton of produce as harvested are 3 kg
for wheat grain and 31 kg for rough
rice/Philippines. Examples on amount of Cl removed
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