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LC5253 di-Sodium tetraborate

GR for analysis (ca. 85% Na2B4O7)


Order number Packaging Quantity Price €
AC32253 Plastic bottle 250 g 32.40


Product information
Synonyms Borax
Hill Formula B4Na2O7*nH2O (n=1,5-2)
Chemical formula Na2B4O7 * nH2O (n=1,5-2)
HS Code 2840 11 00
EC number 215-540-4
EC index number 005-011-00-4
CAS number 12267-73-1


Chemical and physical data
Solubility ca.25 g/l (20 °C) (anhydrous)
Melting point 742 °C (anhydrous)
Density 2.3 g/cm3 (20 °C)
Bulk density 680 kg/m3
pH value 9 – 10 (25 g/l, H2O, 20 °C)
Boiling point 1575 °C (anhydrous)
Vapor pressure (20 °C)


Safety information according to GHS
Hazard Statement(s) H360FD: May damage fertility. May damage the unborn child.
Precautionary Statement(s) P201: Obtain special instructions before use.
P308 + P313: IF exposed or concerned: Get medical advice/ attention.
Signal Word Danger
Hazard Pictogram(s)
Storage class 6.1B Non combustible substances, toxic
WGK WGK 1 slightly water endangering
Disposal 3
Relatively unreactive organic reagents should be collected in container A. If halogenated, they should be collected in container B. For solid residues use container C.


Safety information
R Phrase R 60-61
May impair fertility.May cause harm to the unborn child.
S Phrase S 53-45
Avoid exposure – obtain special instructions before use.In case of accident or if you feel unwell, seek medical advice immediately (show the label where possible).
Categories of danger toxic for reproduction
Hazard Symbol Toxic


Assay (acidimetric) ≥ 85.0 %
Chloride (Cl) ≤ 0.002 %
Phosphate (PO4) ≤ 0.002 %
Sulphate (SO4) ≤ 0.01 %
Heavy metals (as Pb) ≤ 0.002 %
Ca (Calcium) ≤ 0.01 %
Fe (Iron) ≤ 0.001 %