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Merck

1.06505

Sodium dithionite

EMPLURA®

Synonym(s):

Sodium dithionite, Sodium hydrosulfite, Sodium hypodisulfite

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About This Item

Linear Formula:
Na2S2O4
CAS Number:
Molecular Weight:
174.11
UNSPSC Code:
12352302
EC Index Number:
231-890-0
NACRES:
NA.21
MDL number:
Assay:
≥85.0% (iodometric)
Form:
powder
Solubility:
250 g/L (slow decomposition)
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Quality Segment

product line

EMPLURA®

assay

≥85.0% (iodometric)

form

powder

autoignition temp.

>200 °C

potency

2500 mg/kg LD50, oral (Rat)

pH

5.5-8.5 (20 °C, 50 g/L in H2O)

mp

100 °C (decomposition)

transition temp

flash point >100 °C

solubility

250 g/L (slow decomposition)

density

2.5 g/cm3 at 20 °C

bulk density

1250 kg/m3

anion traces

chloride (Cl-): ≤0.05%

cation traces

Fe: ≤0.005%

storage temp.

2-30°C

SMILES string

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

InChI

1S/2Na.H2O4S2/c;;1-5(2)6(3)4/h;;(H,1,2)(H,3,4)/q2*+1;/p-2

InChI key

JVBXVOWTABLYPX-UHFFFAOYSA-L

Application


  • Fast detection of sodium dithionite in sugar using a xanthylium-based fluorescent probe.: This study introduces a rapid method for detecting sodium dithionite residues in sugar using a novel xanthylium-based fluorescent probe. The method is highly sensitive and efficient, making it a significant advancement in food safety and quality control (Wang et al., 2024).

  • Stabilising mannose using sodium dithionite at alkaline conditions.: Research in the kraft pulping process explores the use of sodium dithionite to stabilize mannose under alkaline conditions. The findings highlight its potential to reduce hemicellulose degradation, providing insights for enhancing the efficiency of chemical pulping processes (Lindén et al., 2020).

Analysis Note

Assay (iodometric): ≥ 85.0 %
Identity: passes test
Chloride (Cl): ≤ 0.05 %
Fe (Iron): ≤ 0.005 %

Legal Information

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


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Danger

Hazard Classifications

Acute Tox. 4 Oral - Eye Irrit. 2 - Self-heat. 1

supp_hazards

Storage Class

4.2 - Pyrophoric and self-heating hazardous materials

wgk

WGK 1

flash_point_c

> 100 °C

flash_point_f

>212.0 °F


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.

Substances Subject to be Indicated Names

ishl_indicated

Substances Subject to be Notified Names

ishl_notified



Certificates of Analysis (COA)

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