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Merck
모든 사진(3)

주요 문서

398063

Sigma-Aldrich

Sodium dichromate dihydrate

ACS reagent, ≥99.5%

동의어(들):

Sodium bichromate

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크기 선택

100 G
₩124,845
500 G
₩129,514

₩124,845


출고 가능일2025년 4월 11일세부사항


벌크 견적 요청

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보기 변경
100 G
₩124,845
500 G
₩129,514

About This Item

Linear Formula:
Na2Cr2O7 · 2H2O
CAS Number:
Molecular Weight:
298.00
EC Number:
MDL number:
UNSPSC 코드:
12352302
PubChem Substance ID:
NACRES:
NA.21

₩124,845


출고 가능일2025년 4월 11일세부사항


벌크 견적 요청

Grade

ACS reagent

Quality Level

분석

≥99.5%

양식

crystals

반응 적합성

reagent type: oxidant

불순물

≤0.005% NH4OH ppt.
≤0.005% insolubles

pH

3.5 (20 °C, 100 g/L)

mp

91 °C (lit.)

음이온 미량물

chloride (Cl-): ≤0.005%
sulfate (SO42-): ≤0.01%

양이온 미량물

Al: ≤0.002%
Ca: ≤0.003%

SMILES string

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

InChI

1S/2Cr.2Na.2H2O.7O/h;;;;2*1H2;;;;;;;/q;;2*+1;;;;;;;;2*-1

InChI key

JYDRNIYTFCBIFC-UHFFFAOYSA-N

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일반 설명

Sodium dichromate dehydrate (SDD), a hexavalent chromium compound[1] is commonly used as an oxidizing agent.[2] Chromium (VI) compounds are genotoxic and group 1 IARC (International Agency for Research on Cancer) carcinogen.[3] SDD is one of the common contaminants found in drinking water. Its toxic effects and carcinogenicity has been studied.[1][3][4][5]

애플리케이션

Sodium dichromate dehydrate may be used in preparing Jones reagent which is employed for oxidation reactions.[6] It may be used in the oxidation of arylalkanes.[7]

신호어

Danger

Hazard Classifications

Acute Tox. 2 Inhalation - Acute Tox. 3 Oral - Acute Tox. 4 Dermal - Aquatic Acute 1 - Aquatic Chronic 1 - Carc. 1B - Eye Dam. 1 - Muta. 1B - Ox. Sol. 2 - Repr. 1B - Resp. Sens. 1 - Skin Corr. 1B - Skin Sens. 1 - STOT RE 1 Inhalation

Storage Class Code

5.1B - Oxidizing hazardous materials

WGK

WGK 3

Flash Point (°F)

Not applicable

Flash Point (°C)

Not applicable


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

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

    1 답변
    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/449/386/product-dating-information-mk.pdf

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