Merck Boric acid

Grade:  ACS reagent

Quality Level:  300

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

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