Radionuclides

TECHNICAL
DATA
SHEET
Radionuclides
Caution: For Laboratory Use. A product for research purposes only
Na125I
Product Number:
NEZ033L
LOT SPECIFIC INFORMATION
Calibration Date
Lot Number
Specific Activity
(carrier free)
Concentration
Radiochemical Purity
Radionuclidic Purity
20-May-2015
I052015L
17.4 Ci/mg
643.8 GBq/mg
365.25 mCi/mL
13.51 GBq/mL
99.3 %
99.95 %
PACKAGING: Solvent is 1.0E-5M NaOH (pH 8-11). Measured pH: 10
SPECIFIC ACTIVITY RANGE: Theoretical Carrier Free value is calculated using a half life of 60.14 days.
STORAGE CONDITIONS: Store this product at room temperature.
CONTAMINANTS: < 0.04% I-126.
PHYSICAL PROPERTIES:
Decay Mode
Half Life
Principal Gamma Photon
 X-ray
 X-ray
Electron Capture
60.14 Days
0.035 (6.5%) MeV
0.027 (112.5%) MeV
0.031 (25.4%) MeV
Occupational Limits (based on most restrictive intake category: 10 CFR 20 U.S.NRC Regulations)
Derived Air Concentration (DAC)
Annual Limit on Intake (ALI)
-8
3x10 µCi/mL
40 µCi
DECAY CHART:
To use the decay table find the number of days in the top row and left hand column of
the chart then find the corresponding decay factor. To obtain a precalibration number,
divide by the decay factor. For a postcalibration number multiply by the decay factor.
Days
0
10
20
30
0
1.0000
0.8911
0.7941
0.7077
1
0.9885
0.8809
0.7850
0.6996
2
0.9772
0.8708
0.7760
0.6916
3
0.9660
0.8609
0.7671
0.6836
4
0.9549
0.8510
0.7583
0.6758
5
0.9440
0.8412
0.7497
0.6680
6
0.9332
0.8316
0.7411
0.6604
7
0.9225
0.8221
0.7326
0.6528
8
0.9119
0.8126
0.7242
0.6453
9
0.9015
0.8033
0.7159
0.6379
HAZARD INFORMATION:
WARNING: this product contains a chemical known to the state of California to cause cancer.
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125
Designate area for handling I, clearly label all containers.
125
Store millicurie (37 MBq) quantities of I in containers surrounded by 3-mm (0.125-in.)-thick lead.
125
Wear extremity and whole body dosimeters while handling 10 mCi (370 MBq) quantities of I.
125
Use shielding to minimize exposure while handling I.
Use tools to indirectly handle unshielded multi-millicurie (37 MBq) sources and potentially contaminated vessels.
125
Prohibit eating, drinking, smoking and mouth pipetting in room where I is handled.
Use transfer pipettes, spill trays and absorbent coverings to confine contamination.
Handle potentially volatile compounds in ventilated enclosures.
Handle millicurie (37 MBq) quantities in closed systems vented through activated charcoal traps.
Sample exhausted effluent by continuously drawing a known quantity of air through cartridges containing activated
charcoal.
Wear disposable lab coat, wrist guards and gloves for secondary protection.
Select gloves appropriate for chemicals handled..
Maintain contamination and exposure control by regularly monitoring and promptly decontaminating gloves and
surfaces.
125
Use NaI(Tl) detector or liquid scintillation counter to detect I.
125
Submit urine sample for bioassay from 4 to 48 hours after handling I to indicate uptake by personnel.
Monitor thyroid periodically with a NaI(Tl) detector to determine thyroid dose.
Isolate waste in sealed, clearly labeled containers. Store in ventilated enclosure. Consider holding for decay or
dispose according to approved guidelines.
Establish surface contamination, air concentration, urinalysis and thyroid burden action levels below regulatory
limits. Investigate and correct any causes that may threaten these levels to be exceeded.
125
On completing an operation, secure all I, remove and dispose of protective clothing and coverings; monitor and
decontaminate self and surfaces; wash hands and monitor them again.
125
Store Na I solutions at room temperature because freezing results in subsequent volatilization of radionuclide.
Avoid acidic solutions to minimize volatilization. Some radioiodine compounds may penetrate gloves and skin.
Therefore, these compounds should be handled indirectly by using tools and wearing two pairs of gloves. The outer
layer of gloves should be changed frequently and whenever they are suspected to be contaminated.
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