Dinatriumtetraborat, wasserfrei

Bezeichnung:Dinatriumtetraborat, wasserfrei

CAS-Nr1330-43-4

Englisch Name:Sodium tetraborate

CBNumberCB6233954

SummenformelB4Na2O7

Molgewicht201.22

MOL-Datei1330-43-4.mol

Synonyma

Dinatriumtetraborat, wasserfrei

Natriumdiborat

Natriumborat

Dinatriumtetraborat, wasserfrei physikalisch-chemischer Eigenschaften

Schmelzpunkt	741 °C (lit.)
Siedepunkt	1575°C
Dichte	2.367 g/mL at 25 °C (lit.)
Dampfdruck	7.3 hPa (1200 °C)
Brechungsindex	1.501
Flammpunkt	1575°C
storage temp.	Store at +5°C to +30°C.
Löslichkeit	H₂O: 0.1 M at 20 °C, clear, colorless
Aggregatzustand	Solid
Farbe	White
Wichte	2.367
PH	9.0-10.5 (25℃, 0.1M in H2O)
Wasserlöslichkeit	26 g/L (20 ºC)
Sensitive	Hygroscopic
maximale Wellenlänge (λmax)	λ: 260 nm Amax: ≤0.020 λ: 280 nm Amax: ≤0.015
Merck	14,8590
Expositionsgrenzwerte	ACGIH: TWA 2 mg/m3; STEL 6 mg/m3 NIOSH: TWA 1 mg/m3
Stabilität	Stable. Incompatible with powdered metals.
InChIKey	UQGFMSUEHSUPRD-UHFFFAOYSA-N
NIST chemische Informationen	Sodium borate(1330-43-4)
EPA chemische Informationen	Sodium tetraborate (1330-43-4)

Sicherheit

Kennzeichnung gefährlicher	Xn,Xi,T
R-Sätze:	62-63-36/38-36/37/38-61-60
S-Sätze:	36/37-24/25-26-36-23-45-53
RIDADR	UN 1760 8/PG 2
OEB	C
OEL	TWA: 1 mg/m3
WGK Germany	1
RTECS-Nr.	ED4588000
F	34
TSCA	Yes
HS Code	28401100
Giftige Stoffe Daten	1330-43-4(Hazardous Substances Data)

Gefahreninformationscode (GHS)

Sodium tetraborate Chemische Eigenschaften,Einsatz,Produktion Methoden

ERSCHEINUNGSBILD
GERUCHLOSES HYGROSKOPISCHES WEISSES PULVER ODER GLASARTIGE PLäTTCHEN. VERFäRBT SICH OPAK BEI KONTAKT MIT LUFT.
CHEMISCHE GEFAHREN
Zersetzung beim Erhitzen oder Verbrennen unter Bildung giftiger Rauche mit Natriumoxid. Reagiert mit starken Oxidationsmitteln.
ARBEITSPLATZGRENZWERTE
TLV: (Borate) (Einatembare Fraktion); 2 mg/m?(als TWA); 6 mg/m?(als STEL); Krebskategorie A4 (nicht klassifizierbar als krebserzeugend für den Menschen); (ACGIH 2008).
MAK nicht festgelegt.
AUFNAHMEWEGE
Aufnahme in den Körper durch Inhalation des Aerosols, durch Verschlucken und durch geschädigte Haut.
INHALATIONSGEFAHREN
Verdampfung bei 20°C vernachlässigbar; eine gesundheitsschädliche Partikelkonzentration in der Luft kann jedoch beim Dispergieren schnell erreicht werden, vor allem als Pulver.
WIRKUNGEN BEI KURZZEITEXPOSITION
WIRKUNGEN BEI KURZZEITEXPOSITION:
Die Substanz reizt die Augen, die Haut und die Atemwege. Möglich sind Auswirkungen auf Zentralnervensystem, Nieren und Magendarmtrakt durch Verschlucken hoher Dosen oder durch geschädigte Haut.
WIRKUNGEN NACH WIEDERHOLTER ODER LANGZEITEXPOSITION
Wiederholter oder andauernder Hautkontakt kann Dermatitis hervorrufen. Möglich sind Auswirkungen auf die Atemwege.
LECKAGE
Verschüttetes Material in Behältern sammeln. Reste sorgfältig sammeln. An sicheren Ort bringen. Persönliche Schutzausrüstung: Atemschutzgerät, P2-Filter für schädliche Partikel.
R-Sätze Betriebsanweisung:
R62:Kann möglicherweise die Fortpflanzungsfähigkeit beeinträchtigen.
R63:Kann das Kind im Mutterleib möglicherweise schädigen.
R36/38:Reizt die Augen und die Haut.
R36/37/38:Reizt die Augen, die Atmungsorgane und die Haut.
S-Sätze Betriebsanweisung:
S36/37:Bei der Arbeit geeignete Schutzhandschuhe und Schutzkleidung tragen.
S24/25:Berührung mit den Augen und der Haut vermeiden.
S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
S36:DE: Bei der Arbeit geeignete Schutzkleidung tragen.
S23:Gas/Rauch/Dampf/Aerosol nicht einatmen(geeignete Bezeichnung(en) vom Hersteller anzugeben).
Chemische Eigenschaften
Sodium borate, Na2B407.10H20, also known as sodium tetraborate and sodium pyrobomte, is a white crystalline powder that melts at 120°C (248 °F). Sodium borate in its natural impure form is also known as borax, Borax is a noncombustible (an inherent fire retardant), bluish-gray or green, odorless crystalline powder or granules. Sodium borate is used in glass and ceramic enamel mixes,detergents, fertilizers, pharmaceuticals, and photograph.
Verwenden
Refined borax (Na2B4O7) is an additive in laundry products such as soaps and water-softening compounds. Also used for cosmetics, body powders, and the manufacture of paper and leather. Borax is an environmentally safe natural herbicide and insecticide.
Verwenden
Sodium Tetraborate, is an important boron compound, which has a wide variety of applications. It is a component of many detergents, cosmetics, and enamel glazes. It is also used to make buffer solutions in biochemistry, as a fire retardant, as an anti-fungal compound for fiberglass, as a flux in metallurgy, neutron-capture shields for radioactive sources, a texturing agent in cooking, and as a precursor for other boron compounds.
Vorbereitung Methode
Anhydrous borax is produced from borax through high temperature fusion. On cooling, the clear, glass-like material is ground into fine white granules. Because of its higher bulk density, it is preferred where storage space is limited. It is used principally in the manufacture of glass, ceramics, and enamel.
Allgemeine Beschreibung
Pale yellow solid or thick liquid with a faint odor of detergent. Mixes with water. Soap bubbles may be produced.
Air & Water Reaktionen
Water soluble.
Reaktivität anzeigen
SODIUM PEROXOBORATE is incompatible with the following: Zirconium, strong acids, metallic salts . The true peroxoborate has been reported to detonate on light friction. The common "tetrahydrate" is not a peroxoborate, Sodium tetraborate is relatively stable under mild grinding with other substances.
Health Hazard
No adverse effects from inhaling borax have been reported. Ingestion may cause acute or chronic effects; initial symptoms are nausea, vomiting, and diarrhea; these may be followed by weakness, depression, headaches, skin rashes, drying skin, cracked lips, and loss of hair; shock may follow ingestion of large doses and may interfere with breathing. Eye contact with powder or solutions may cause irritation; no chronic effects have been recognized, but continued contact should be avoided. Local skin irritation may result from contact with powder or strong solutions; the latter may cause chronic dermatitis on prolonged contact, and if skin is broken, enough boron may be absorbed to cause boron poisoning (symptoms are similar to those for ingestion).
Landwirtschaftliche Anwendung
Sodium tetraborate, also called borax, sodium borate, sodium pyroborate and sodium tetraborate decahydrate (Na2B4O7.10H2O) is a type of borate, and is used as a fertilizer to reduce boron deficiency. It is a white salt, finely ground for fertilizer application.
Sodium tetraborate(Na2B4O7) and sodium metaborate (Na2B2O4) are non-selective, taken up by roots, and have an unknown mechanism of action. Boron accumulates in reproductive structures after translocation from roots. Boron compounds are used for long-term, nonselective weed control in industrial and power line areas in combination with triazine and urea herbicides.
Sicherheitsprofil
A nuisance dust. Experimental reproductive effects. When heated to decomposition it emits toxic vapors of B.
mögliche Exposition
Borax is used as a soldering flux, preservative against wood fungus; and as an antiseptic. Used in ant poisons, for fly control around refuse and manure piles, as a larvicide. It is used in the manufacture of enamels and glazes, fiberglass insulation; sodium perborate bleach; in tanning, cleaning compounds; for fireproofing fabrics and wood; and in artificial aging of wood.
läuterung methode
Most of the water of hydration is removed from the decahydrate (see below) by evacuation at 25o for three days, followed by heating to 100o and evacuation with a high-speed diffusion pump. The dried sample is then heated gradually to fusion (above 966o), allowed to cool gradually to 200o, then tranferred to a desiccator containing P2O5 [Grenier & Westrum J Am Chem Soc 78 6226 1956]. [Becher in Handbook of Preparative Inorganic Chemistry (Ed. Brauer) Academic Press Vol I pp 794-795 1963.]
Inkompatibilitäten
Dissolves in water forming a basic solution. Boron dust may form explosive mixture with air. Contact with strong oxidizers may be violent. Boron is incompatible with ammonia, bromine tetrafluoride, cesium carbide, chlorine, fluorine, interhalogens, iodic acid, lead dioxide, nitric acid, nitric oxide, nitrosyl fluoride, nitrous oxide, potassium nitrite, rubidium carbide, silver fluoride.
Waste disposal
Borax, dehydrated: The material is diluted to the recommended provisional limit (0.10 mg/L) in water. The pH is adjusted to between 6.5 and 9.1 and then the material can be discharged into sewers or natural streams.

Sodium tetraborate Upstream-Materialien And Downstream Produkte

Dinatriumtetraborat, wasserfrei Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

1330-43-4, Sodium tetraborate Verwandte Suche:

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