Sunday, September 29, 2013

Metaboric acid is a white crystalline solid cubic and is only slightly soluble in water. Melts at a


Boric acid (IUPAC) name systematic trioxobórico acid (III) Other names Borate (III) ortho-boric acid hydrogen semi-developed formula B (OH) 3 Structural formula Molecular formula H View Image 3 BO 3 one Identifiers CAS number 10043-35-3 Properties Physical Appearance Physical State Solid Crystal White Density 1435 kg / m3, 1.435 g / cm 3 Molar mass 61.83 g / mol Melting point 442 K (169 C) Boiling point 573 K (300 C) Chemical properties Acid 1 = 9,236 2 = 19.74, 3 = 13.80 -992.28 gas pKa ΔfH0 Thermochemistry k J / mol k ΔfH0sólido -1093.99 J / mol S0gas, 1 bar 295.23 J mol-1 K Threat NFPA 704
0 1 0 0 Hazards Ingestion Toxic. Vomiting and diarrhea in small doses, at higher doses can be fatal. Inhalation can cause irritation. May cause skin irritation. xanthan gum Eyes May cause irritation. SI units and standard conditions (25 C and 1 atm), unless otherwise indicated. The boric acid or trioxobórico (III) is a chemical compound, slightly acidic. Is used as an antiseptic, xanthan gum insecticide, flame retardant and other chemical precursor. Is also used as a buffering agent for pH regulation. Is also used as an ingredient in many foliar fertilizers and preserving foods such as shellfish although illegal use today.
Exists in crystalline form (powder white crystals) xanthan gum that readily dissolves in water. Its chemical formula xanthan gum is H 3 BO 3. The mineral form of this compound is referred sassolite. Commonly used to make pédicos bathrooms.
Metaboric acid is a white crystalline solid cubic and is only slightly soluble in water. Melts at about 236 C, and when heated above about 300 C more dehydrated, forming pyroboric acid or tetraboric acid (H2B4O7)
Boric acid is not dissociated in aqueous xanthan gum solution as a Brønsted acid, but it is a Lewis acid which interacts with water molecules to form ions tetrahidroxiborato, as confirmed by Raman spectroscopy 4:
Boric acid powder xanthan gum is sold in pharmacies without a prescription. Boric acid can be used as an antiseptic for minor burns or cuts and is sometimes used in dressings or ointments. xanthan gum Boric acid is applied in a very dilute solution for eye wash. Dilute boric acid can be used as a vaginal douche for treating bacterial vaginosis due to excessive alkalinity. 6 Even as anti-bacterial compound, boric acid can also be used as a treatment for acne. It is also used as prevention of athlete's foot, by inserting powder in the socks or stockings, and in solution can be used to treat some kinds of otitis externa (ear infection) in humans and animals. xanthan gum The preservative in urine sample bottles (red cap) in the UK is boric acid.
Boric acid solutions used to wash eyes or on abraded skin are known to be especially toxic to infants, especially xanthan gum after repeated use, due to the slow rate of elimination. 7 Insecticide [edit edit font]
Boric acid was first registered in the U.S. as an insecticide in 1948 for control of cockroaches, termites, ants, fleas, silverfish, and many other insects. The product is generally considered safe to use in household kitchens to control cockroaches and ants. 8 acts as a stomach poison affecting the metabolism of insects, and the dry powder is abrasive to the exoskeleton of insects. Conservation [edit edit font]
In combination with its use as an insecticide, boric acid also prevents and destroys existing wet and dry rot in wood. It can be used in combination with an ethylene glycol carrier to treat external wood against fungal and insect attack. May buy borate impregnated rods for insertion xanthan gum into timber through drill holes where it is known that moisture and moisture buildup and sitting. It is available in injectable gel and paste for treating wood putrefaction affected without the need to replace the timber. Based treatments borate concentrates can be used to prevent the growth of mold, algae and mycelium, even in marine xanthan gum environments.
Boric acid is added to salt in the curing of cattle hides, calf skins and sheepskins. This helps control bacteria growth and insect control. Lubrication [edit edit font]
Colloidal suspensions of nanoparticles of boric acid dissolved in oil or vegetable oil can form a remarkable lubricant on metal or ceramic surfaces 9 with a coefficient xanthan gum of friction

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