Natriumhydrogensulfit

Bezeichnung:Natriumhydrogensulfit

CAS-Nr7631-90-5

Englisch Name:Sodium bisulfite

CBNumberCB5854257

SummenformelHNaO3S

Molgewicht104.06

MOL-Datei7631-90-5.mol

Synonyma

Natriumhydrogensulfit

Natriumhydrogensulfitl?sung

Saure Natriumsulfitl?sung

Natriumhydrogensulfit physikalisch-chemischer Eigenschaften

Schmelzpunkt	150 °C
Dichte	1.48
storage temp.	Store at RT.
Löslichkeit	300 g/L
Aggregatzustand	Powder/Solid
Wichte	1.48
Farbe	White
Geruch (Odor)	Slight odor of sulfur dioxide
Wasserlöslichkeit	300 g/L
Merck	13,8660
Stabilität	Stable. Incompatible with strong oxidizing agents, strong acids.
InChIKey	DWAQJAXMDSEUJJ-UHFFFAOYSA-M
CAS Datenbank	7631-90-5(CAS DataBase Reference)
EPA chemische Informationen	Sodium bisulfite (7631-90-5)

Sicherheit

Kennzeichnung gefährlicher	Xn
R-Sätze:	22-31-41-52
S-Sätze:	26-39-46-25
OEB	B
OEL	TWA: 5 mg/m3
RIDADR	UN 2693
WGK Germany	1
RTECS-Nr.	UX8225000
PackingGroup	III
HS Code	28321000
Giftige Stoffe Daten	7631-90-5(Hazardous Substances Data)
Toxizität	LD50 i.v. in rats: 115 mg/kg (Hoppe, Goble)

Gefahreninformationscode (GHS)

Sodium bisulfite Chemische Eigenschaften,Einsatz,Produktion Methoden

ERSCHEINUNGSBILD
FARBLOSE BIS GELBE FLüSSIGKEIT MIT CHARAKTERISTISCHEM GERUCH.
CHEMISCHE GEFAHREN
Zersetzung beim Erhitzen und bei Kontakt mit Säuren, unter Bildung von Schwefeloxiden. Reagiert mit Säuren und starken Oxidationsmitteln. Feuer- und Explosionsgefahr. Schwache Säure. Greift Metalle an.
ARBEITSPLATZGRENZWERTE
TLV: 5 mg/m?(als TWA); Krebskategorie A4 (nicht klassifizierbar als krebserzeugend für den Menschen); (ACGIH 2005).
MAK: Sulfite lösen pseudoallergische Reaktionen aus; (DFG 2006).
AUFNAHMEWEGE
Aufnahme in den Körper durch Verschlucken.
INHALATIONSGEFAHREN
Nur ungenügende Angaben vorhanden über die Geschwindigkeit, mit der eine gesundheitsschädliche Konzentration in der Luft erreicht wird.
WIRKUNGEN BEI KURZZEITEXPOSITION
WIRKUNGEN BEI KURZZEITEXPOSITION:
Der Stoff kann asthmaartige Reaktionen hervorrufen oder Entzündungsreaktionen der Haut bei sensibilisierten Personen nach Verschlucken.
LECKAGE
Ausgelaufene Flüssigkeit in abgedeckten Plastikbehältern sammeln. Reste mit Sand oder inertem Absorptionsmittel aufnehmen und an einen sicheren Ort bringen.
R-Sätze Betriebsanweisung:
R22:Gesundheitsschädlich beim Verschlucken.
R31:Entwickelt bei Berührung mit Säure giftige Gase.
R41:Gefahr ernster Augenschäden.
S-Sätze Betriebsanweisung:
S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
S39:Schutzbrille/Gesichtsschutz tragen.
S46:Bei Verschlucken sofort ärztlichen Rat einholen und Verpackung oder Etikett vorzeigen.
S25:Berührung mit den Augen vermeiden.
Chemische Eigenschaften
white powder
Chemische Eigenschaften
Sodium bisulfite is a white crystalline solid. Slight odor of sulfur dioxide and a disagreeable taste. Slowly oxidized to the sulfate on exposure to air
Verwenden
Reducing agent; convenient source of sulfur dioxide.
Verwenden
Sodium Bisulfite is a preservative that exists as a powder, with a solubility of 1 g in 4 ml of water. it prevents discoloration and inhib- its bacterial growth. it is used in dried fruit to inhibit browning and maintain the bright color. it is found in reconstituted lemon juice. see sulfur dioxide.
Verwenden
sodium bisulfite is a preservative and anti-oxidant, it is most frequently used as a pH adjuster.
Verwenden
As disinfectant and bleach, particularly for wool; in dyeing for preparing hot and cold indigo vats; in paper-making in place of sodium hyposulfite to remove Cl from bleached fibers; as stripper (reducer) in laundering; to remove permanganate stains from skin and clothing; to render certain dyes sol; manufacture of sodium hydrosulfite; coagulating rubber latex; as preservative for deteriorative liqs or solutions used for technical purposes; as antiseptic in fermentation industries. As preservative and bleach in food. Pharmaceutic aid (antioxidant).
Definition
ChEBI: Sodium hydrogensulfite is an inorganic sodium salt having hydrogensulfite as the counterion. It has a role as a mutagen and an allergen. It is an inorganic sodium salt and a sulfite salt. It contains a hydrogensulfite.
Allgemeine Beschreibung
Also known as sodium acid sulfite or sodium hydrogen sulfite, NaHS03 is white crystals or crystalline powder that has a slight sulfurous odor and taste.Specific gravity 1.48. Strong irritant to skin and tissue. It is soluble in water,insoluble in alcohol,unstable in air,and non-combustible. Derived by saturating sodium carbonate solution with sulfur dioxide and the solution crystallized. Used as a chemical(sodium salts, cream of tartar), in vat dye preparation, textiles (antichlor, mordant, discharge), food preservative, bleaching groundwood, wool,etc., reducing agent, fermentation, antiseptic, cask sterilization (brewing), copper and brass plating,color preservative for pale crepe rubber, wood pulp digestion, analytical reagent,and as a dietary supplement.
Air & Water Reaktionen
Water soluble.
Reaktivität anzeigen
Sodium bisulfite is a reducing agent. Emits highly toxic gaseous sulfur dioxide gas when heated to decomposition or on contact with mineral acids [Sax, 9th ed., 1996, p. 2949].
Hazard
Not permitted in meats and other sources of vitamin B 1 , strong irritant to skin and tissue.
Health Hazard
Powder is irritating to eyes, nose, and throat and can irritate skin. Ingestion may cause irritation of stomach. Very large doses cause violent colic, diarrhea, depression, and death.
Brandgefahr
Flammable/combustible material. May ignite on contact with moist air or moisture. May burn rapidly with flare-burning effect. Some react vigorously or explosively on contact with water. Some may decompose explosively when heated or involved in a fire. May re-ignite after fire is extinguished. Runoff may create fire or explosion hazard. Containers may explode when heated.
Kontakt-Allergie
Sodium bisulfite is mainly used as an antioxidant in pharmaceutical products, as a disinfectant or bleach, and in the dye industry. The bisulfite of commerce consists chiefly of metabisulfite and possesses the same properties as the true bisulfite. So, the allergen to be tested in products containing disulfite is the corresponding metabisulfite.
Sicherheitsprofil
Poison by intravenous and intraperitoneal routes. Moderately toxic by ingestion. A corrosive irritant to skin, eyes, and mucous membranes. Mutation data reported. An allergen. When heated to decomposition it emits toxic fumes of SO, and Na2O. See also SULFUROUS ACID and SULFITES
mögliche Exposition
Sodium bisulfite is used in the digestion of wood pulp, in the tanning of leather; in the dyeing of textiles; as a photographic reducing agent; as a food preservative; as an additive in electroplating; as disinfectant, bleach, antioxidant, and as inhibitor of yeast and bacteria in winemaking.
Versand/Shipping
UN2693 Bisulfites, inorganic, aqueous solutions, n.o.s., Hazard class: 8; Labels: 8-Corrosive material. UN3260 Bisulfites, inorganic, solid, n.o.s., Hazard class: 8; Labels: 8-Corrosive material.
läuterung methode
Crystallise it from hot H2O (1mL/g). Dry it at 100o under vacuum for 4hours.
Inkompatibilitäten
Aqueous solution is a weak acid. Incompatible with strong mineral acids forming a toxic sulfur dioxide gas. A strong reducing agent, sodium bisulfite is incompatible with oxidizers, such as perchlorates, peroxides, permanganates, chlorates, and nitrates. Reacts with bases forming sulfate. Slowly oxidizes to sulfate in air. Heat causes decomposition. Slowly oxidized to the sulfate on exposure to air. Contact with oxidizers or acids forms sulfur dioxide gas. Attacks some metals in the presence of moisture.
Waste disposal
Dump into water, add soda ash, then neutralize with HCl; flush to sewer with large volumes of water.

Sodium bisulfite Upstream-Materialien And Downstream Produkte

Natriumhydrogensulfit Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

7631-90-5, Sodium bisulfite Verwandte Suche:

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