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  • 1.12939 - Lactose Standard 5 %

1.12939 Supelco

Lactose Standard 5 %

solid water standard for coulometric/volumetric Karl Fischer Titration and Karl Fischer oven method Aquastar®

Synonym: Lactose Standard 5 %, Milk sugar, Lactobiose

  • CAS Number 10039-26-6

  • Empirical Formula (Hill Notation) C12H22O11 · xH2O

  • Molecular Weight 342.30 (anhydrous basis)

  •  EC Index Number 200-559-2



Related Categories Analytical Reagents, Analytical Standards, Analytical/Chromatography, Elemental, Ions and Water (Karl Fischer) Standards, Karl Fischer Reagents and Standards,
Quality Level   100
grade   reag. ISO (17025)
  reag. ISO (17034)
assay   (Karl Fischer)
form   solid
autoignition temp.   390 °C
potency   >10000 mg/kg LD50, oral (Rat)
application(s)   titration: suitable
pH   4.0-6.5 (20 °C, 100 g/L in H2O)
mp   202 °C
bulk density   500 kg/m3
storage conditions   Store at +15°C to +25°C.



SKU-pack size numbers ending with a "3" are SmartChemicals with an RFID tag on the label for seamless data transfer to the instrument, e.g. xxxxxx1003 or xxxxxxx 4003. More information on www.sigmaaldrich.com/SmartChemicals


Replaces: 1.12939.0010

Analysis Note

Water content: 5.00 - 5.20 %
Measurement method: coulometric according Karl Fischer
extended measuring uncertainly: +/- 0.05 %

Safety & Documentation

Safety Information

Safety Information for this product is unavailable at this time.
Protocols & Articles


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