Sodium cacodylate trihydrate

Bezeichnung:Sodium cacodylate trihydrate

CAS-Nr6131-99-3

Englisch Name:Sodium cacodylate trihydrate

CBNumberCB0104234

SummenformelC2H10AsNaO3

Molgewicht180.01

MOL-Datei6131-99-3.mol

Sodium cacodylate trihydrate physikalisch-chemischer Eigenschaften

Schmelzpunkt	77-80 °C
storage temp.	room temp
Löslichkeit	H₂O: 0.5 M at 20 °C, clear, colorless
Aggregatzustand	Solid
Farbe	White
PH	9.0-9.5 (100g/l, H2O, 20℃)
Wasserlöslichkeit	Soluble in water and alcohol. Insoluble in diethyl ether.
Merck	14,8595
BRN	3702348
CAS Datenbank	6131-99-3(CAS DataBase Reference)

Sicherheit

Kennzeichnung gefährlicher	T,N
R-Sätze:	23/25-50/53-40
S-Sätze:	20/21-28-45-60-61
RIDADR	UN 1688 6.1/PG 2
WGK Germany	3
RTECS-Nr.	CH7890000
F	3
TSCA	Yes
HazardClass	6.1
PackingGroup	II
HS Code	29319090

Gefahreninformationscode (GHS)

Sodium cacodylate trihydrate Chemische Eigenschaften,Einsatz,Produktion Methoden

R-Sätze Betriebsanweisung:
R23/25:Giftig beim Einatmen und Verschlucken.
R50/53:Sehr giftig für Wasserorganismen, kann in Gewässern längerfristig schädliche Wirkungen haben.
S-Sätze Betriebsanweisung:
S20/21:Bei der Arbeit nicht essen, trinken,rauchen.
S28:Bei Berührung mit der Haut sofort abwaschen mit viel . . . (vom Hersteller anzugeben).
S45:Bei Unfall oder Unwohlsein sofort Arzt zuziehen (wenn möglich, dieses Etikett vorzeigen).
S60:Dieses Produkt und sein Behälter sind als gefährlicher Abfall zu entsorgen.
S61:Freisetzung in die Umwelt vermeiden. Besondere Anweisungen einholen/Sicherheitsdatenblatt zu Rate ziehen.
Chemische Eigenschaften
Sodium cacodylate is a white crystalline solid which occurs as the trihydrate. It liquefies in the water of hydration @ 60°C and becomes anhydrous @ 120°C.
Verwenden
Sodium cacodylate trihydrate has been used in the stabilization of the fixatives for electron microscopy. It has also been used to collect vibratome sections to perform nucleoside-diphosphatase technique.
Verwenden
Sodium cacodylate trihydrate has been used as a buffer to fix cells for transmission electron microscopy and as a buffer to fix cells for scanning electron microscopy.
Biologische Funktion
Cacodylic acid sodium salt is used as a buffer (pH buffering range of 5.1 - 7.4), especially for bactericidal buffers used in electron microscopy. The buffering capacity of cacodylate prevents excess acidity that may result from tissue fixation. It is also used in protein crystallisation.
Allgemeine Beschreibung
Sodium cacodylate is an organic arsenic compound that is metabolized to produce inorganic, trivalent arsenicin vivo. Sodium cacodylate has been used as a source of arsenic in toxicological research. It is used as a buffer with an effective pH buffering range of 5.1-7.4. In microscopy studies, the buffering capacity of cacodylate prevents excess acidity that may result from tissue fixation.
mögliche Exposition
This material has been used as a nonselective herbicide and for general weed control.
Versand/Shipping
UN1688 Sodium cacodylate Hazard Class: 6.1; Labels: 6.1-Poisonous materials. UN3465 Organoarsenic compound, solid, n.o.s., Hazard Class: 6.1; Labels: 6.1Poisonous materials, Technical Name Required
Inkompatibilitäten
Incompatible with oxidizers, strong bases; acids, active metals (iron, aluminum, zinc). Contact with acids react to form highly toxic dimethylarsine gas. Attacks some metals.
Waste disposal
For cacodylic acid, precipitate as calcium arsenate and calcium arsenite by treatment with excess lime water. Recycle if possible. If not, put in secure storage for possible disposal in leach-proof dumps. In accordance with 40CFR165, follow recommendations for the disposal of pesticides and pesticide containers. Must be disposed properly by following package label directions or by contacting your local or federal environmental control agency, or by contacting your regional EPA office.

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