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Merck

A6756

Sodium arsenate dibasic heptahydrate

≥98.0%

Synonim(y):

Disodium hydrogen arsenate heptahydrate, di-Sodium hydrogen arsenate heptahydrate

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50 G

505,00 zł

100 G

795,00 zł

505,00 zł

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Informacje o tej pozycji

Wzór liniowy:
Na2HAsO4 · 7H2O
Numer CAS:
10048-95-0
Masa cząsteczkowa:
312.01
NACRES:
NA.21
PubChem Substance ID:
24891135
UNSPSC Code:
12352302
MDL number:
MFCD00149179
Assay:
≥98.0%
Form:
powder

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InChI

1S/AsH3O4.2Na.7H2O/c2-1(3,4)5;;;;;;;;;/h(H3,2,3,4,5);;;7*1H2/q;2*+1;;;;;;;/p-2

SMILES string

O.O.O.O.O.O.O.[Na+].[Na+].O[As]([O-])([O-])=O

InChI key

KOLXPEJIBITWIQ-UHFFFAOYSA-L

assay

≥98.0%

form

powder

reaction suitability

reagent type: catalyst
core: arsenic

pH

8.5-9.0 (25 °C, 50 g/L)

Quality Level

200

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Ta pozycja
S9663431478S9390
Sodium arsenate dibasic heptahydrate ≥98.0%

Sigma-Aldrich

A6756

Sodium arsenate dibasic heptahydrate

Sodium arsenate dibasic heptahydrate ACS reagent, ≥98%

Sigma-Aldrich

S9663

Sodium arsenate dibasic heptahydrate

Sodium phosphate dibasic heptahydrate ≥99.99% trace metals basis

Sigma-Aldrich

431478

Sodium phosphate dibasic heptahydrate

Sodium phosphate dibasic heptahydrate ACS reagent, 98.0-102.0%

Sigma-Aldrich

S9390

Sodium phosphate dibasic heptahydrate

form

powder

form

powder

form

solid

form

powder

assay

≥98.0%

assay

≥98%, 98.0-102.0%

assay

≥99.99% trace metals basis

assay

98.0-102.0%

Quality Level

200

Quality Level

200

Quality Level

200

Quality Level

200

pH

8.5-9.0 (25 °C, 50 g/L)

pH

8.5-9 (25 °C, 50 g/L)

pH

8.7-9.3

pH

8.7-9.3 (25 °C, 5% in solution)

reaction suitability

reagent type: catalyst
core: arsenic

reaction suitability

-

reaction suitability

-

reaction suitability

-

General description

Sodium arsenate dibasic heptahydrate (As(V)) is an arsenic compound.

Application

Sodium arsenate dibasic heptahydrate may be used as a reference standard for the quantification of arsenic compounds in rice- and seafood-based samples by ion chromatography-inductively coupled plasma/ mass spectrometry. The samples for analysis were prepared by ultrasonic-assisted enzymatic extraction (UAEE).[1]
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Danger

Hazard Classifications

Acute Tox. 3 Inhalation - Acute Tox. 3 Oral - Aquatic Acute 1 - Aquatic Chronic 1 - Carc. 1A

Klasa składowania

6.1A - Combustible acute toxic Cat. 1 and 2 / very toxic hazardous materials

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges

Wykazy regulacyjne

Wykazy regulacyjne dotyczą głównie produktów chemicznych. Można w nich podawać ograniczoną liczbę informacji na temat produktów niechemicznych. Brak wpisu oznacza, że żaden ze składników nie znajduje się w wykazie. Użytkownik odpowiada za zagwarantowanie bezpiecznego i zgodnego z prawem stosowania produktu.

10048-95-0

CAS No.

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Certyfikaty analizy (CoA)

Lot/Batch Number
0000536359
0000536359
0000513049
0000513049
0000507483

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Odwiedź Bibliotekę dokumentów

Validation of a method for arsenic speciation in food by ion chromatography-inductively coupled plasma/mass spectrometry after ultrasonic-assisted enzymatic extraction.
Dufailly V, et al.
Journal of AOAC (Association of Official Analytical Chemists) International, 94(3), 947-958 (2011)
Shugo Suzuki et al.
Toxicology, 299(2-3), 155-159 (2012-06-06)
Inorganic arsenic is a known human carcinogen, inducing tumors of the skin, urinary bladder and lung. It is metabolized to organic methylated arsenicals. 2,3-Dimercaptopropane-1-sulfonic acid (DMPS), a chelating agent, is capable of reducing pentavalent arsenicals to the trivalent state and
Takayuki Watanabe et al.
Archives of toxicology, 85(6), 577-588 (2011-05-04)
It has been suggested that arsenic (+3 oxidation state) methyltransferase (AS3MT) plays a critical role in methylation of arsenic, and that arsenic-glutathione conjugate is a substrate for AS3MT-catalyzed methylation of arsenic. However, the mechanism of arsenic methylation in cells is
Samantha L Goggin et al.
Neurotoxicology, 33(5), 1338-1345 (2012-09-11)
Over the past two decades, key advancements have been made in understanding the complex pathology that occurs following not only high levels of arsenic exposure (>1 ppm) but also levels previously considered to be low (<100 ppb). Past studies have
Martin P Pothier et al.
Frontiers in microbiology, 9, 2310-2310 (2018-10-20)
Despite its high toxicity and widespread occurrence in many parts of the world, arsenic (As) concentrations in decentralized water supplies such as domestic wells remain often unquantified. One limitation to effective monitoring is the high cost and lack of portability
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Questions

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  1. How can I determine the shelf life / expiration / retest date of this product?

    1 answer

    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/418/501/product-dating-information-06-25-mk.pdf

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  2. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer

    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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