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157953

Sodium hydrosulfite

technical grade

Synonym(s):

Sodium hypodisulfite

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About This Item

Linear Formula:
NaO2SSO2Na
CAS Number:
7775-14-6
Molecular Weight:
174.11
NACRES:
NA.21
PubChem Substance ID:
329750858
UNSPSC Code:
12352302
EC Number:
231-890-0
MDL number:
MFCD00011640
Assay:
≥82.5% (iodometric)
Grade:
technical grade
Form:
powder
Solubility:
water: soluble(lit.)
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grade

technical grade

Quality Segment

200

assay

≥82.5% (iodometric)

form

powder

pH

7-9 (20 °C, 50 g/L)

solubility

water: soluble(lit.)

cation traces

heavy metals: ≤0.002%

storage temp.

room temp

SMILES string

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

General description

Sodium hydrosulfite (Sodium dithionite, Sodium hypodisulfite, Na2S2O4) is a white crystalline sodium salt. It decomposes in the presence of atmospheric oxygen to afford sodium hydrogen sulfate. It has been prepared by reducing sodium hydrogen sulfite in sulfurous acid solution with zinc. It is widely used for the decolorization prior to dyeing of cloths in the textile industry.

Application

Sodium hydrosulfite may be employed as a reducing agent for the reduction of graphite oxide in a study.
Sodium hydrosulfite has been used as a fluorescent quenching agent in the encapsulation of polynucleotides via production of asymmetric nanoparticles. It has also be used in the form of buffer for the elution of probe labelled proteins involved in the indentification of cellular targets of covalent kinase inhibitors via mass spectrometry method (MS).

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pictograms

FlameExclamation mark
GHS02,GHS07

signalword

Danger

Hazard Classifications

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

supp_hazards

EUH031

Storage Class

4.2 - Pyrophoric and self-heating hazardous materials

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.

Substances Subject to be Indicated Names

ishl_indicated

Substances Subject to be Notified Names

ishl_notified

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