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Boric acid CAS#10043-35-3
CAS Number: 10043-35-3
Chemical Formula: BH3O3
Synonyms:
oric acid for medicine
Boric Acid, Powder
MOQ (Minimum Order Quantity): 1 FCL (Full Container Load)
Appearance: White Powder
Boric acid CAS#10043-35-3
Boric acid, also known as orthoboric acid, appears as white crystalline powder or as lustrous, lamellar crystals with triclinic axes. It possesses a faintly bitter taste and imparts a slippery sensation upon skin contact. Odourless, it dissolves in water, ethanol, glycerol, ethers, and essential oils. Its aqueous solution exhibits weak acidity. Upon heating to 70–100°C, orthoboric acid gradually dehydrates to form metaboric acid; at 150–160°C it becomes pyroboric acid; and at 300°C it decomposes into boric anhydride (B₂O₃). Boric acid is toxic to humans. Its weakly acidic aqueous solution exhibits typical Lewis acid properties. The presence of hydrochloric acid, citric acid, or tartaric acid enhances its solubility in water.
Boric acid has uses in the production of textile fiberglass, flat panel displays, and eye drops. Boric acid is recognized for its application as a pH buffer and as a moderate antiseptic agent and emulsifier.
Boric acid Chemical Properties |
Melting point | 160 °C (dec.) (lit.) |
Boiling point | 219-220 °C (9.7513 mmHg) |
bulk density | 400-600kg/m3 |
density | 1.440 g/cm3 |
vapor pressure | 2.6 mm Hg ( 20 °C) |
refractive index | n20/D 1.330-1.340 |
storage temp. | Store at +5°C to +30°C. |
solubility | H2O: soluble |
pka | 8.91±0.43(Predicted) |
form | working solution |
color | ≤10(APHA) |
Specific Gravity | 1.435 |
Odor | Odorless |
PH | 3.6-4.4 (25℃, saturated solution in H2O) |
PH Range | 3.8 - 4.8 |
Water Solubility | 49.5 g/L (20 ºC) |
λmax | λ: 260 nm Amax: 0.05 |
Sensitive | Hygroscopic |
Merck | 14,1336 |
BRN | 1697939 |
Exposure limits | ACGIH: TWA 2 mg/m3; STEL 6 mg/m3 |
Cosmetics Ingredients Functions | BUFFERING |
Cosmetic Ingredient Review (CIR) | Boric acid (10043-35-3) |
InChI | 1S/BH3O3/c2-1(3)4/h2-4H |
InChIKey | KGBXLFKZBHKPEV-UHFFFAOYSA-N |
SMILES | OB(O)O |
LogP | -1.09 at 22℃ |
CAS DataBase Reference | 10043-35-3(CAS DataBase Reference) |
NIST Chemistry Reference | B(OH)3(10043-35-3) |
EPA Substance Registry System | Orthoboric acid (10043-35-3) |
Absorption | ≤0.05 at 260 in H2O at 1M |
Safety Information |
Hazard Codes | Xi,T,Xn |
Risk Statements | 36/37/38-60-63-62-61 |
Safety Statements | 26-36-53-45-37/39-36/37/39-22-24/25-23 |
WGK Germany | 2 |
RTECS | ED4550000 |
F | 3 |
TSCA | TSCA listed |
HS Code | 28100090 |
Storage Class | 6.1C - Combustible acute toxic Cat.3 |
Hazard Classifications | Repr. 1B |
Hazardous Substances Data | 10043-35-3(Hazardous Substances Data) |
Toxicity | LD50 orally in rats: 5.14 g/kg (Smyth). |
Product Application of Boric acid CAS#10043-35-3
For weatherproofing wood and fireproofing fabrics; as a preservative; manufacture of cements, crockery, porcelain, enamels, glass, borates, leather, carpets, hats, soaps, artificial gems; in nickeling baths; cosmetics; printing and dyeing, painting; photography; for impregnating wicks; electric condensers; hardening steel. Also used as insecticide for cockroaches and black carpet beetles.
Factory and Equipment Show
Fast delivery time
Inventory 2-3 working days New production 7-10 working days
