1.06505

Sodium dithionite

EMPLURA^®

• Synonym(s): Sodium dithionite, Sodium hydrosulfite, Sodium hypodisulfite
• Empirical Formula (Hill Notation): Na₂O₄S₂
• CAS Number: 7775-14-6
• Molecular Weight: 174.11
• MDL number: MFCD00011640
• UNSPSC Code: 12352302
• EC Index Number: 231-890-0
• NACRES: NA.21

Properties

• Quality Level: 200
• 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
• 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

Description

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

Safety Information

• Pictograms: GHS02,GHS07
• Signal Word: Danger
• Hazard Statements: H251 - H302 - H319
• Precautionary Statements: P235 - P264 - P280 - P301 + P312 - P305 + P351 + P338 - P337 + P313
• Hazard Classifications: Acute Tox. 4 Oral - Eye Irrit. 2 - Self-heat. 1
• Supplementary Hazards: EUH031
• Storage Class Code: 4.2 - Pyrophoric and self-heating hazardous materials
• WGK: WGK 1
• Flash Point(F): 212.0 °F
• Flash Point(C): > 100 °C