All Photos(3)

B7901

Sigma-Aldrich

Boric acid

suitable for electrophoresis, ≥99.5%

Linear Formula:
H3BO3
CAS Number:
Molecular Weight:
61.83
EC Number:
MDL number:
eCl@ss:
38120104
PubChem Substance ID:
NACRES:
NA.25

Quality Level

vapor pressure

2.6 mmHg ( 20 °C)

assay

≥99.5%

form

powder

application(s)

electrophoresis: suitable

impurities

≤0.005% Insoluble in methanol

pH

8.2-10.1

mp

160 °C (dec.) (lit.)

solubility

H2O: 40 mg/mL, clear, colorless

density

1.43 g/cm3 at 20 °C

anion traces

chloride (Cl-): ≤0.001%
phosphate (PO43-): ≤0.001%
sulfate (SO42-): ≤0.01%

cation traces

Ca: ≤0.005%
Fe: ≤0.001%
heavy metals (as Pb): ≤0.001%

suitability

suitable for electrophoresis (as a reagent)

storage temp.

room temp

SMILES string

OB(O)O

InChI

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

InChI key

KGBXLFKZBHKPEV-UHFFFAOYSA-N

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General description

Boric acid is a weak acid and is widely used in multi-purpose solutions (MPS) as a buffering agent. It is less toxic and non-volatile in nature.

Application

Boric acid has been used as a component of tris borate buffer:
  • for native polyacrylamide gel electrophoresis (PAGE) and denaturing urea-PAGE of tRNA samples(80)
  • for urea-polyacrylamide electrophoresis of RNA samples(81)
  • for agarose gel electrophoresis of DNA samples(82)

Packaging

500 g in poly bottle
1 kg in poly bottle

Biochem/physiol Actions

Boric acid has antibacterial and fungicidal properties. It is used in the periodontal therapy as an irrigation solution as it elicits bactericidal effects in microbial biofilms in root canal. Boric acid may favor osteoblastic activity and inhibit bone loss. It inhibits Candida albicans fungal infection and has potential to treat vaginal infection.

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

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves

Certificate of Analysis

Certificate of Origin

Nonclinical safety evaluation of boric acid and a novel borate-buffered contact lens multi-purpose solution, Biotrue? multi-purpose solution
Lehmann DM, et al.
Contact Lens & Anterior Eye : the Journal of the British Contact Lens Association, 33, S24-S32 (2010)
Antibacterial effect of different concentration of boric acid against enterococcus faecalis biofilms in root canal
Zan R, et al.
Marmara Dental Journal, 2, 76-80 (2013)
Antifungal mechanisms supporting boric acid therapy of Candida vaginitis
De Seta F, et al.
The Journal of Antimicrobial Chemotherapy, 63(2), 325-336 (2008)
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...

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