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1.06336

Supelco

Sodium dichromate dihydrate

for analysis EMSURE® ACS

Synonym(s):

Sodium dichromate dihydrate, Sodium bichromate, Sodium pyrochromate

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About This Item

Empirical Formula (Hill Notation):
Cr2Na2O7 · 2H2O
CAS Number:
7789-12-0
Molecular Weight:
298.00
MDL number:
MFCD00149166
UNSPSC Code:
12352302
EC Index Number:
234-190-3
NACRES:
NA.21

grade

ACS reagent

Quality Level

300

product line

EMSURE®

Assay

99.5-100.5% (iodometric)

form

solid

potency

50 mg/kg LD50, oral (Rat)
1000 mg/kg LD50, skin (Rabbit)

impurities

≤0.005% Insoluble matter

pH

3.5 (20 °C, 100 g/L in H2O)

bp

400 °C/1013 hPa (decomposition)

mp

356.7 °C (anhydrous substance)

density

2.35 g/cm3 at 20 °C

bulk density

1200 kg/m3

anion traces

chloride (Cl-): ≤0.002%
sulfate (SO42-): ≤0.01%

cation traces

Al: ≤0.002%
Ca: ≤0.002%
Cu: ≤0.001%
Fe: ≤0.002%
K: ≤0.01%
Mg: ≤0.005%
Pb: ≤0.002%

storage temp.

2-30°C

InChI

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

InChI key

JYDRNIYTFCBIFC-UHFFFAOYSA-N

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Analysis Note

Assay (iodometric): 99.5 - 100.5 %
Identity: passes test
Insoluble matter: ≤ 0.005 %
Chloride (Cl): ≤ 0.002 %
Sulfate (SO₄): ≤ 0.01 %
Al (Aluminium): ≤ 0.002 %
Ca (Calcium): ≤ 0.002 %
Cu (Copper): ≤ 0.001 %
Fe (Iron): ≤ 0.002 %
K (Potassium): ≤ 0.01 %
Mg (Magnesium): ≤ 0.005 %
Pb (Lead): ≤ 0.002 %

Legal Information

EMSURE is a registered trademark of Merck KGaA, Darmstadt, Germany

Signal Word

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

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

EU REACH SVHC Candidate List

CAS No.

EU REACH Annex XVII (Restriction List)

EU REACH Annex XIV (Authorisation List)

CAS No.

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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