Boric acid

grade

ACS reagent

Quality Level

300

Agency

reag. ISO
reag. Ph. Eur.

vapor pressure

2.6 mmHg ( 20 °C)

product line

EMSURE^®

Assay

99.5-100.5% (alkalimetric)

form

solid

potency

2660 mg/kg LD₅₀ oral (Rat)
>2000 mg/kg LD₅₀ skin (Rat)

impurities

≤0.005% In methanol insoluble matter
≤0.05% Nonvolatile with methanol

pH

3.8-4.8 (20 °C 33 g/L in H₂O)

mp

160 °C (dec.) (lit.)

solubility

49.2 g/L

density

1.489 g/cm³ at 23 °C

bulk density

400‑600 kg/m³

anion traces

chloride (Cl^–): ≤0.0003%
phosphate (PO₄^3-): ≤0.0005%
sulfate (SO₄^2-): ≤0.0005%

cation traces

Ca: ≤0.002%
Fe: ≤0.0001%
Pb: ≤0.001%
heavy metals (as Pb): ≤0.0005%

storage temp.

2-30°C

SMILES string

OB(O)O

InChI

1S/BH3O3/c2-1(3)4/h2-4H

InChI key

KGBXLFKZBHKPEV-UHFFFAOYSA-N