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

Product Name

Boric acid, 99.99% metals basis

Structure

CAS

10043-35-3

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

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

MSDS