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1.00165

Supelco

Boric acid

for analysis EMSURE® ACS,ISO,Reag. Ph Eur

Synonym(s):

Orthoboric acid, Trihydroxidoboron

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About This Item

Linear Formula:
H3BO3
CAS Number:
Molecular Weight:
61.83
MDL number:
UNSPSC Code:
12352301
EC Index Number:
233-139-2
NACRES:
NA.21

grade

ACS reagent

Quality Level

agency

reag. ISO
reag. Ph. Eur.
suitable for SM 4500 - NH3
suitable for SM 5210

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 (PO43-): ≤0.0005%
sulfate (SO42-): ≤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

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General description

Boric acid (EMSURE® grade product) is used for regulated analyses and highly demanding lab applications. It also offers the highest quality and unmatched scope of specifications to give complete control of test conditions and eliminate uncertainties. EMSURE® grade products comply with all international regulations and can be used in various applications.

Application

Boric acid can be used:
  • For the determination of the protein content of yogurt samples.
  • In the proximate analysis of seaweed Caulerpa sp. samples.

Features and Benefits

  • Most extensive specifications worldwide
  • Tested for up to 70 parameters
  • Extraordinary purity
  • Very low limiting values
  • Greater accuracy and control of analyses
  • Optimized for highly critical and demanding analyses
  • Ideal for method development
  • No interference or contamination due to unknown impurities

Analysis Note

Assay (alkalimetric): 99.5 - 100.5 %
Identity: passes test
Appearance of solution: passes test
pH-value (3.3 %, water): 3.8 - 4.8
Chloride (Cl): ≤ 0.0003 %
Phosphate (PO₄): ≤ 0.0005 %
Sulfate (SO₄): ≤ 0.0005 %
Solubility in ethanol: passes test
In methanol insoluble matter: ≤ 0.005 %
Heavy metals (as Pb): ≤ 0.0005 %
Ca (Calcium): ≤ 0.002 %
Fe (Iron): ≤ 0.0001 %
Pb (Lead): ≤ 0.001 %
Organic impurities: passes test
Nonvolatile with methanol: ≤ 0.05 %
Corresponds to ACS,ISO,Reag. Ph Eur

Legal Information

EMSURE is a registered trademark of Merck KGaA, Darmstadt, Germany

pictograms

Health hazard

signalword

Danger

hcodes

Hazard Classifications

Repr. 1B

Storage Class

6.1D - Non-combustible acute toxic Cat.3 / toxic hazardous materials or hazardous materials causing chronic effects

wgk_germany

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable


Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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