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B0394

Sigma-Aldrich

Boric acid

ACS reagent, ≥99.5%

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About This Item

Linear Formula:
H3BO3
CAS Number:
10043-35-3
Molecular Weight:
61.83
EC Number:
233-139-2
MDL number:
MFCD00011337
UNSPSC Code:
12352106
eCl@ss:
38120104
PubChem Substance ID:
329773111
NACRES:
NA.21
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grade

ACS reagent

Quality Level

200

Agency

suitable for SM 4500 - NH3
suitable for SM 5210

vapor pressure

2.6 mmHg ( 20 °C)

Assay

≥99.5%

form

powder

technique(s)

PCR: suitable

impurities

≤0.005% Insoluble in methanol
≤0.05% Nonvolatile with methanol

mp

160 °C (dec.) (lit.)

solubility

water: soluble

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This Item
339067202878B7901
Boric acid ACS reagent, ≥99.5%

B0394

Boric acid

Boric acid 99.97% trace metals basis

339067

Boric acid

Boric acid 99.999% trace metals basis

202878

Boric acid

Boric acid suitable for electrophoresis, ≥99.5%

B7901

Boric acid

grade

ACS reagent

grade

-

grade

-

grade

-

assay

≥99.5%

assay

99.97% trace metals basis

assay

99.999% trace metals basis

assay

≥99.5%

Quality Level

200

Quality Level

100

Quality Level

200

Quality Level

200

agency

suitable for SM 4500 - NH3, suitable for SM 5210

agency

suitable for SM 5210

agency

-

agency

-

form

powder

form

powder or crystals

form

crystalline powder

form

powder

solubility

water: soluble

solubility

water: soluble

solubility

water: 49.2 g/L at 20 °C

solubility

H2O: 40 mg/mL, clear, colorless

General description

Boric acid is a weak monobasic Lewis acid(electron pair acceptor), which finds application in the areas of glass making, fire retardant, lubrication agent, buffer, and neutron absorber.

Application

Boric acid can be used as a catalyst to synthesize:
  • N-substituted cinnamamides via amidation reaction between cinnamic acid and benzylamines.
  • β-Aminoalcohols through the regioselective epoxides ring opening with aromatic amines in the presence of glycerol as a co-catalyst.
  • Organosulfur compounds via thia-Michael addition of thiols to α, β-unsaturated compounds.
It can also be used as an activator for the solvent-free reduction of aldehydes and ketones to alcohols in the presence of sodium borohydride.

Pictograms

Health hazard
GHS08

Signal Word

Danger

Hazard Statements

H360FD

Hazard Classifications

Repr. 1B

Storage Class Code

6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

  • Specification Sheet

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    Certificates of Analysis (COA)

    Lot/Batch Number
    0000279532
    0000296866
    0000274528
    0000279173
    0000279536

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    Debin Wang et al.
    ACS nano, 8(8), 7896-7904 (2014-07-16)
    Building plasmonic nanostructures using biomolecules as scaffolds has shown great potential for attaining tunable light absorption and emission via precise spatial organization of optical species and antennae. Here we report bottom-up assembly of hierarchical plasmonic nanostructures using DNA origami templates
    Jing Li et al.
    American journal of physiology. Cell physiology, 306(10), C943-C960 (2014-03-22)
    The human solute carrier (SLC26) family of anion transporters consists of 10 members (SLCA1-11, SLCA10 being a pseudogene) that encode membrane proteins containing ~12 transmembrane (TM) segments with putative N-glycosylation sites (-NXS/T-) in extracellular loops and a COOH-terminal cytosolic STAS
    Hye Ryeo Lee et al.
    Journal of chromatography. A, 1346, 117-122 (2014-05-09)
    In liquid phase microextraction, high enrichment factors can be obtained using an acceptor phase of small volume. By hanging an acceptor drop at the separation capillary tip, single drop microextraction (SDME) can be in-line coupled with capillary electrophoresis (CE). The
    Yona Goldshmit et al.
    Oncotarget, 5(18), 8602-8613 (2014-09-28)
    The three oncogenes, ErbB receptors, Ras proteins and nucleolin may contribute to malignant transformation. Previously, we demonstrated that nucleolin could bind both Ras protein and ErbB receptors. We also showed that the crosstalk between the three proteins facilitates anchorage independent
    Albert Serrà et al.
    ACS nano, 8(5), 4630-4639 (2014-05-03)
    Electrodeposition from microemulsions using ionic liquids is revealed as a green method for synthesizing magnetic alloyed nanoparticles, avoiding the use of aggressive reducing agents. Microemulsions containing droplets of aqueous solution (electrolytic solution containing Pt(IV) and Co(II) ions) in an ionic
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