MilliporeSigma
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1.00165

Supelco

Boric acid

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

Synonym(s):
Orthoboric acid, Trihydroxidoboron
Linear Formula:
H3BO3
CAS Number:
Molecular Weight:
61.83
MDL number:
EC Index Number:
233-139-2

grade

ACS reagent

Quality Level

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 (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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339067PHR2664B2645
Boric acid for analysis EMSURE® ACS,ISO,Reag. Ph Eur

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Boric acid

Boric acid 99.97% trace metals basis

Sigma-Aldrich

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Boric acid

Boric acid pharmaceutical secondary standard, certified reference material

Supelco

PHR2664

Boric acid

Boric acid tablet, 1 g boric acid per tablet

Sigma-Aldrich

B2645

Boric acid

grade

ACS reagent

grade

-

grade

certified reference material, pharmaceutical secondary standard

grade

-

agency

reag. ISO, reag. Ph. Eur.

agency

-

agency

traceable to NIST NIST951A, traceable to NIST NIST973, traceable to USP 1076341

agency

-

vapor pressure

2.6 mmHg ( 20 °C)

vapor pressure

2.6 mmHg ( 20 °C)

vapor pressure

2.6 mmHg ( 20 °C)

vapor pressure

2.6 mmHg ( 20 °C)

assay

99.5-100.5% (alkalimetric)

assay

99.97% trace metals basis

assay

-

assay

≥95% (titration)

form

solid

form

crystalline powder

form

powder

form

tablet

impurities

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

impurities

-

impurities

-

impurities

-

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

Signal Word

Danger

Hazard Statements

Hazard Classifications

Repr. 1B

Storage Class Code

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

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis

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Certificate of Quality

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