CAS 10043-35-3 Boric acid, 99.99% metals basis

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Boric acid, 99.99% metals basis

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Catalog Number

ACM10043353-1

CAS Number

10043-35-3

Product Name

Boric acid, 99.99% metals basis

Structure

Category

Electronic Chemicals

Description

Boric acid is an odorless white solid. Melting point 171°C. Sinks and mixes with water. (USCG, 1999);DryPowder; Liquid; OtherSolid; OtherSolid, Liquid; PelletsLargeCrystals;PelletsLargeCrystals;Colourless, odourless, transparent crystals or white granules or powder; slightly unctuous to the touch; occurs in nature as the mineral sassolite;Solid;ODOURLESS COLOURLESS CRYSTALS OR WHITE POWDER.;Odorless white solid.

IUPAC Name

boric acid

Molecular Weight

61.84g/mol

Molecular Formula

H3BO3;BH3O3;B(OH)3;H3BO3;B(OH)3;BH3O3

Canonical SMILES

B(O)(O)O

InChI

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

InChI Key

KGBXLFKZBHKPEV-UHFFFAOYSA-N

Boiling Point

572 °F at 760 mm Hg (decomposes) (NTP, 1992);572°F

Melting Point

340 °F (NTP, 1992);170.9 °C;171°C;340°F

Density

1.435 at 68 °F (USCG, 1999);1.5 g/cu cm;Relative density (water = 1): 1.5;1.435

Solubility

10 to 50 mg/mL at 66° F (NTP, 1992);Soluble in hot water, partially soluble in cold water;Solubility: in glycerol 17.5% at 25 °C; ethylene glycol 18.5% at 25 °C; in methanol 173.9 g/L at 25 °C; in ethanol 94.4 g/L at 25 °C; in acetone 0.6% at 25 °C; ethyl acetate 1.5% at 25 °C;Water solubility: 2.52% at 0 °C; 3.49% at 10 °C; 4.72% at 20 °C; 6.23% at 30 °C; 8.08% at 40 °C; 10.27% at 50 °C; 12.97% at 60 °C; 15.75% at 70 °C; 19.10% at 80 °C; 23.27% at 90 °C; 27.53% at 100 °C;Solubility in water is increased by hydrochloric acid;In water, 5.0X10+4 mg/L at 25 °C;50 mg/mL at 25 °C;Solubility in water, g/100ml at 20 °C: 5.6

Application

Boric acid, 99.99% metals basis, serves a diverse range of applications primarily due to its excellent properties and high purity. This compound, which can manifest as a white crystalline powder or colorless crystals, is instrumental in the field of molecular biology, particularly in the purification of DNA and RNA and as a component of biological buffers. It plays a critical role in studying the toxic impacts of boron on plant growth and antioxidant systems and examining the effects of boric acid in biological models, such as the uptake in different regions of a rat's brain. With its antimicrobial preservative qualities, boric acid finds use in a variety of products, including eye drops, cosmetics, ointments, and topical creams. It also contributes to pH control owing to its buffering capacity and has been employed in external preparations for its antiseptic properties. Its applications extend to therapeutic uses, like the treatment of yeast infections with suppositories, although it is now largely replaced by more advanced disinfectants in certain uses due to the availability of less toxic alternatives.

Color/Form

Colorless, transparent crystals or white granules or powder;Colorless triclinic crystals;White waxy triclinic solid plates

Complexity

Covalently-Bonded Unit Count

EC Number

233-139-2;233-139-2;234-343-4

Exact Mass

62.017524g/mol

Formal Charge

Heavy Atom Count

ICSC Number

0991

Log P

log Kow = 0.175;0.18;-1.09

MeSH Entry Terms

boric acid;boron oxide hydroxide;orthoboric acid

Monoisotopic Mass

62.017524g/mol

NSC Number

81726

Odor

Odorless

Other Experimental

Slightly unctuous to touch; volatile with steam; solubility in water increased by hydrochloric, citric or tartaric acids;Loses 1.5H₂O at 300 °C;Standard enthalpy of formation: -1094.3 kJ/mol (crystal); -994.1 kJ/mol (gas);pH at 20 °C: 6.1 (0.1% solution); 5.1 (1.0% solution); 3.7 (4.5% solution);Boric acid will form soluble salts with monovalent cations (e.g. Na2B407.1OH20, 6% in water) and insoluble salts with divalent cations (e.g. CaB407.6H20, almost insoluble in cold water).;Henry's Law constant = 2.6X10-12 atm-cum/mole at 25 °C, based on measured water solubility and vapor pressure;Hydroxyl radical reaction rate constant = 4.2X10-13 cu cm/molecule-sec at 25 °C (est)

Refractive Index

Index of refraction: 1.337, 1.461, 1.462

Rotatable Bond Count

RTECS Number

ED4550000

Stability

Stable in air.;...Stable up to 100 °C

UNII

R57ZHV85D4

Vapor Pressure

1.6X10-6 mm Hg at 25 °C (2.136X10-4 Pa); log P (in Pa) = 26.83 - 9094/T where T is deg K;Vapor pressure at 20 °C: negligible

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