1.00165

Boric acid

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

• Synonym(s): Orthoboric acid, Trihydroxidoboron
• Linear Formula: H₃BO₃
• CAS Number: 10043-35-3
• Molecular Weight: 61.83
• NACRES: NA.21
• EC Index Number: 233-139-2
• UNSPSC Code: 12352301
• MDL number: MFCD00011337
• Assay: 99.5-100.5% (alkalimetric)
• Concentration: 99.5-100.5%
• Form: solid
• Grade: ACS reagent

Properties

• 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)
• concentration: 99.5-100.5%
• 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: ≤0.0005% ((ACS))
• storage temp.: 2-30°C
• SMILES string: OB(O)O
• InChI: 1S/BH3O3/c2-1(3)4/h2-4H
• InChI key: KGBXLFKZBHKPEV-UHFFFAOYSA-N

Description

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 (ACS) ≤ 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

Safety Information

• pictograms: GHS08
• signalword: Danger
• hcodes: H360FD
• pcodes: P201 - P202 - P280 - P308 + P313 - P405 - P501
• Hazard Classifications: Repr. 1B
• Storage Class: 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