Physical Data:

  Pure Beta Emitter

Radiological Data:

• 12% of beta particles energy transmitted through dead layer of skin
• Critical organ:  male gonads
• Internal exposure through ingestion, inhalation, or absorption are primary concerns
• Dose rate to basal cells from skin contamination - 1040 mr/hr per µCi per cm²

Shielding:

• None required

Survey Instrumentation:

• Liquid Scintillation Counter (LSC)
  • LS window:  0 to 700
  • LS efficiency:  97%
• Thin window G-M survey meter

Regulatory Compliance:

Special Considerations:
Note that organic compounds are often strongly retained and no limits of exposure have been set for them.  Care also needs to be taken not to generate sulphur dioxide or hydrogen sulphide which could be inhaled.  Radiodysis of S³⁵ amino acids during storage and use may lead to the release of S³⁵ labeled volatile impurities.  Although the level of these impurities is small, contamination of the internal surfaces of storage and reaction vessels may occur.  Vials should be opened and used in ventilated electrons.