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82566 Sigma-Aldrich

Buffer solution pH 4.0 (20°C)

sodium azide ~0.05 %, sodium hydroxide ~0.068 M, citric acid ~0.056 M, sodium chloride ~0.044 M

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Properties

shelf life   limited shelf life, expiry date on the label
contains   NaN3 as stabilizer
composition   citric acid, ~0.056 M
  sodium azide, ~0.05%
  sodium chloride, ~0.044 M
  sodium hydroxide, ~0.068 M
density   1.007 g/mL at 20 °C

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Other Notes

Same product — same quality — now Sigma-Aldrich brand

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Personal Protective Equipment 
RIDADR 
NONH for all modes of transport
WGK Germany 
nwg

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Certificate of Analysis

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