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31146

Sigma-Aldrich

Ácido bórico

puriss. p.a., ACS reagent, reag. ISO, reag. Ph. Eur., buffer substance, ≥99.8%

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About This Item

Fórmula lineal:
H3BO3
Número de CAS:
10043-35-3
Peso molecular:
61.83
Número CE:
233-139-2
Número MDL:
MFCD00011337
Código UNSPSC:
12352106
eCl@ss:
38120104
ID de la sustancia en PubChem:
329753669
NACRES:
NA.21
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grado

ACS reagent
puriss. p.a.

Agency

USP/NF
reag. ISO
reag. Ph. Eur.

presión de vapor

2.6 mmHg ( 20 °C)

Ensayo

≥99.8%

Formulario

powder or crystals

impurezas

≤0.005% insoluble in methanol
≤0.05% with methanol-HCl non-volat. matter

pH

3.6-4.0 (20 °C, 4%)

mp

160 °C (dec.) (lit.)

solubilidad

water: soluble

densidad

1.440 g/cm3

trazas de anión

chloride (Cl-): ≤3 mg/kg
phosphate (PO43-): ≤5 mg/kg
sulfate (SO42-): ≤5 mg/kg

trazas de catión

As: ≤5 mg/kg
Ca: ≤10 mg/kg
Cd: ≤5 mg/kg
Cu: ≤5 mg/kg
Fe: ≤1 mg/kg
Mg: ≤5 mg/kg
Pb: ≤5 mg/kg
Zn: ≤5 mg/kg

cadena SMILES

OB(O)O

InChI

1S/BH3O3/c2-1(3)4/h2-4H

Clave InChI

KGBXLFKZBHKPEV-UHFFFAOYSA-N

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Descripción general

Boric acid can be used as a Lewis acid catalyst in organic synthesis to facilitate various organic reactions, including dehydration, hydrolysis, decarboxylation, and condensation reactions. It produces different borate anions and salts and can react with alcohols to produce borate esters. It is also used as a buffering agent and pH adjuster.
Boric acid is a very weak acid, having pH in the range of 3.6-4.0. Coulometric method for the determination of boric acid has been reported.[1]

Aplicación

Boric acid can be used as a precursor to synthesize boron carbon oxynitride thin films by the atmospheric pressure chemical vapor deposition (APCVD) method using carbon-rich methane and nitrogen-rich ammonia.

Pictogramas

Health hazard
GHS08

Palabra de señalización

Danger

Frases de peligro

H360FD

Clasificaciones de peligro

Repr. 1B

Código de clase de almacenamiento

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

Clase de riesgo para el agua (WGK)

WGK 1

Punto de inflamabilidad (°F)

Not applicable

Punto de inflamabilidad (°C)

Not applicable

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Certificados de análisis (COA)

Lot/Batch Number
SDBB2501
SDBB1985
STBL1661
STBK6465
STBK5451

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Catanzaro EJ, et al.
Boric Acid: Isotopic and Assay Standard Reference Materials, 1-1 (1970)
L Romano et al.
The Journal of antimicrobial chemotherapy, 55(1), 110-114 (2004-12-03)
There is very little information, to date, on the antifungal activity of bergamot oil. In this study, we investigated the in vitro activity of three bergamot oils (natural essence, furocoumarin-free extract and distilled extract) against clinically relevant Candida species. We
L Charlet Bhami et al.
Journal of vector borne diseases, 52(2), 147-152 (2015-06-30)
The use of low concentrations of boric acid as a potential and effective control agent for the eggs and immature stages of Aedes aegypti L. and Aedes albopictus Skuse (Diptera: Culicidae) is found to be safe and effective as compared
One-pot synthesis of 3, 4-dihydropyrimidin-2(1H)-ones using boric acid as catalyst.
Tu S, et al.
Tetrahedron Letters, 44(32), 6153-6155 (2003)
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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  1. How is shipping temperature determined? And how is it related to the product storage temperature?

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    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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  2. How can I determine the shelf life / expiration / retest date of this product?

    1 answer

    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

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