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EC number: 231-272-0
CAS number: 7473-98-5
UV-VIS spectrophotometry was used to
determine the molar absorption coefficient (ɛ):
In neutral test solution :
ɛ= 10600 L/mol/cm at λmax 244 nm
ɛ= 950 L/mol/cm at λmax 280 nm
In acidic test solution :
ɛ= 10700 L/mol/cm at λmax 245 nm
ɛ= 990 L/mol/cm at λmax 280 nm
In basic test solution :
ɛ= 10600 L/mol/cm at λmax 245 nm
ɛ= 980 L/mol/cm at λmax 280 nm
No detectable absorption was found
from 380 up to 900 nm
There is a second shoulder at 330 nm
in all spectra (netral, acid, basic), which is very faint with about 100
L*cm-1*mol-1. Because of the low and scattering
values no single results are reported.
In this guideline (OECD 101) study, the
test material (EC 231-272-0) was determined to be light sensitive
Study conducted to recognised training guidelines
The UV-VIS spectrophotometry was used to
determine the molar absorption coefficient (ɛ).
The maximum absorption (λmax) of test
solutions (neutral, acid, basic) were detected at 244 nm and at 280 nm
in the UV light range.
The molar extinction coefficient of
neutral solution was determined to be ɛ= 10600 L/mol/cm at λmax 244
nm and ɛ= 950 L/mol/cm at λmax 280 nm. No detectable absorption was
found above 380 nm.
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