| Identification | Back Directory | [Name]
Sodium metaborate | [CAS]
7775-19-1 | [Synonyms]
NaBO2
Kodalk
Borosoap
Rasorite
SODIUMBORATES
Sodium borate(1-)
SODIUM MONOBORATE
SODIUM METABORATE
Sodium dioxoborate
Sodiooxyboron oxide
Monosodium metaborate
Sodium metaborate 8 mol
Boric acid, monosodium salt
sodium metaborate, anhydrous
Boric acid (HBO2), sodium salt
Boric acid, sodium salt, hydrate | [EINECS(EC#)]
231-891-6 | [Molecular Formula]
BNaO2 | [MDL Number]
MFCD00003521 | [MOL File]
7775-19-1.mol | [Molecular Weight]
65.8 |
| Chemical Properties | Back Directory | [Appearance]
White lumps.Soluble in water. Noncombustible.
| [Melting point ]
966 °C | [Boiling point ]
1434 °C | [density ]
2.464 | [solubility ]
soluble in H2O | [form ]
white hexagonal crystals | [pka]
8.94[at 20 ℃] | [color ]
white hexagonal, hexane crystals, crystalline | [Water Solubility ]
g/100g solution H2O: 14.10 (0°C), 22.00 (25°C), 55.60 (100°C); solid phase, NaBO2 ·4H2O (0°C, 25°C), NaBO2 · 2H2O (100°C) [KRU93] | [Specific Heat Capacity]
Cp(crystal):1.00152J/(g·K),at 25℃ | [Uses]
Herbicide. Also available commercially as
octahydrate and tetrahydrate.
| [NIST Chemistry Reference]
Sodium metaborate(7775-19-1) | [EPA Substance Registry System]
Sodium metaborate (7775-19-1) |
| Hazard Information | Back Directory | [Chemical Properties]
White lumps.Soluble in water. Noncombustible.
| [Definition]
ChEBI: An inorganic sodium salt having metaborate as the counterion. | [Agricultural Uses]
Herbicide, Insecticide, Fungicide, Nematocid: Not listed for use in EU countries. Registered for use in the U.S | [Trade name]
ALLPRO BARACIDE®; ATRATOL®[C]; BAREGROUND®; MONOBOR-CHLORATE®; PRAMITOL®; TRI-KILL®; UREABOR® | [Production Methods]
Sodium metaborate is produced commercially by reacting boric acid with sodium carbonate or sodium hydroxide under controlled heating conditions. The process involves neutralisation and dehydration, yielding crystalline sodium metaborate hydrates or anhydrous forms depending on temperature and water content. | [Mechanism of action]
As an insecticide it acts as a stomach poison disruting digestive and nervous systems. As a fungicide it inhibits fungal growth preventing spore reproduction. As a herbicide it acts as a dessicant. | [Pesticide Type]
Insecticide; Herbicide; Fungicide |
| Questions And Answer | Back Directory | [Description]
Sodium Metaborate is the sodium salt of Metaborate. Sodium metaborate is used in the manufacturing of borosilicate glasses. It is also a component of herbicides and antifreeze1. It can also be used as an oil additive with anti-wear properties2. Sodium metaborate electroreduction in the alkaline system can act as a novel desulphurization process of coal water slurry3. It also has role in hydrolysis of sodium borohydride to minimize the water utilization4. It can also act as a novel alkali in alkali/surfactant/polymer flooding5. It is also useful in the thermo-chemical production of sodium borohydride6, which is a safe and practical hydrogen storage material for on-board hydrogen production.
| [Reference]
- https://en.wikipedia.org/wiki/Sodium_metaborate
- Liu, Weimin. "The Antiwear Properties of Sodium Metaborate as an Oil Additive” Tribology 48.4(1990):290-293.
- Shen, Yafei, T. Sun, and J. Jia. "A novel desulphurization process of coal water slurry via sodium metaborate electroreduction in the alkaline system." Fuel 96.7(2012):250-256.
- Marrero-Alfonso, Eyma Y., et al. "Minimizing water utilization in hydrolysis of sodium borohydride: The role of sodium metaborate hydrates." International Journal of Hydrogen Energy 32.18(2007):4723-4730.
- Chen, Fuzhen, et al. "Evaluation the performance of sodium metaborate as a novel alkali in alkali/surfactant/polymer flooding." Journal of Industrial & Engineering Chemistry 19.2(2013):450-457.
- Eom, Kwang Sup, et al. "Thermochemical production of sodium borohydride from sodium metaborate in a scaled-up reactor." International Journal of Hydrogen Energy 38.6(2013):2804-2809.
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