Specification Sheet

Product Name
Urea solution BioUltra, ~8 M in H2O

Product Number
51457

Product Brand
SIGMA

CAS Number
57-13-6

Molecular Weight
60.06

Test

Specification

APPEARANCE (COLOR)Colorless
APPEARANCE (FORM)Liquid
TITRATION (MOLARITY)7.50 - 8.50 mol/l
DENSITY D20/41.115 - 1.135
REFRACTIVE INDEX N20/D1.397 - 1.410
TRACES FORMALDEHYDE (AS HCHO)≤ 50 mg/kg
METAL TRACE ANALYSIS (ICP)CORRESPONDS TO REQUIREMENTS
ALUMINIUM (ICP)≤ 1 mg/kg
BARIUM (ICP)≤ 1 mg/kg
BISMUTH (ICP)≤ 1 mg/kg
CALCIUM (ICP)≤ 5 mg/kg
CADMIUM (ICP)≤ 1 mg/kg
COBALT (ICP)≤ 1 mg/kg
CHROMIUM (ICP)≤ 1 mg/kg
COPPER (ICP)≤ 1 mg/kg
IRON (ICP)≤ 1 mg/kg
POTASSIUM (ICP)≤ 20 mg/kg
LITHIUM (ICP)≤ 1 mg/kg
MAGNESIUM (ICP)≤ 1 mg/kg
MANGANESE (ICP)≤ 1 mg/kg
MOLYBDENUM (ICP)≤ 1 mg/kg
SODIUM (ICP)≤ 20 mg/kg
NICKEL (ICP)≤ 1 mg/kg
LEAD (ICP)≤ 1 mg/kg
STRONTIUM (ICP)≤ 1 mg/kg
ZINC (ICP)≤ 1 mg/kg
ARSENIC TRACES (MHS-AAS)≤ 0.1 mg/kg
TOTAL SULFUR AS SO4 (ICP)≤ 10 mg/kg
CHLORIDE (CL)≤ 5 mg/kg
VARIOUS GUARANTEE LABEL TESTBiuret ≤ 500 mg/kg
SOLUBILITY (METHOD)NEAT
APPEARANCE (SOLUTION)CLEAR COLORLESS
PH (SOLUTION)7.5 - 9.5
RESIDUE (FILTER TEST)NO RESIDUE
UV - ABS. AT 260 NM≤ 0.03
UV - ABS. AT 280 NM≤ 0.02
RECOMMENDED RETEST PERIOD48 MONTHS