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Safety Information

1.06528

Supelco

Sodium disulfite

(sodium metabisulfite) for analysis EMSURE® ACS,Reag. Ph Eur

Synonym(s):

Sodium disulfite, Sodium metabisulfite, Sodium pyrosulfite, Disulfite, Pyrosulfite

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About This Item

Empirical Formula (Hill Notation):
Na2O5S2
CAS Number:
Molecular Weight:
190.11
MDL number:
UNSPSC Code:
12352302
EC Index Number:
231-673-0
NACRES:
NA.21

grade

ACS reagent

Quality Level

Agency

reag. Ph. Eur.

product line

EMSURE®

Assay

98.0-100.5% (iodometric)

form

powder

potency

1540 mg/kg LD50, oral (Rat)
>2000 mg/kg LD50, skin (Rat)

impurities

≤0.005% Insoluble matter

pH

3.5-5 (20 °C, 50 g/L in H2O)

mp

150 °C (decomposition)

solubility

650 g/L

density

2.36 g/cm3 at 20 °C

bulk density

1000‑1200 kg/m3

anion traces

chloride (Cl-): ≤0.005%
thiosulfate (S2O32-): ≤0.05%passes test

cation traces

As: ≤0.0001%
Fe: ≤0.0005%
heavy metals (as Pb): ≤0.001%

storage temp.

2-30°C

InChI

1S/2Na.H2O5S2/c;;1-6(2)5-7(3)4/h;;(H,1,2)(H,3,4)/q2*+1;/p-2

InChI key

LDTLADDKFLAYJA-UHFFFAOYSA-L

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Analysis Note

Assay (iodometric): 98.0 - 100.5 %
Identity: passes test
Appearance of solution: passes test
pH-value (5 %; water): 3.5 - 5.0
Insoluble matter: ≤ 0.005 %
Chloride (Cl): ≤ 0.005 %
Thiosulfate (S₂O₃):
≤ 0.05 %
: passes test
Heavy metals (as Pb): ≤ 0.001 %
As (Arsenic): ≤ 0.0001 %
Fe (Iron): ≤ 0.0005 %

Legal Information

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

Pictograms

CorrosionExclamation mark

Signal Word

Danger

Hazard Statements

Hazard Classifications

Acute Tox. 4 Oral - Eye Dam. 1

Supplementary Hazards

Storage Class Code

13 - Non Combustible Solids

WGK

WGK 1

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.

ISHL Indicated Name

Substances Subject to be Indicated Names

ISHL Notified Names

Substances Subject to be Notified Names

JAN Code

NAPE1065280100:
1065289050:
1065285000:
1065281000:
1065280100:
1065280000:
1065282500:
1065289999:
1065288889:
1065280500:


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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