Sodium pyrosulfite - ACS , CAS No.7681-57-4

CAS: 7681-57-4 Cat. No.: S112440 분자식: Na2S2O5 분자량: 190.11 EC 번호: 231-673-0
주문 가능
GRADE & PURITY ACS ? ACS grade — meets American Chemical Society specifications, the analytical benchmark in the US. Use for analytical and QC work needing ACS-defined purity.
Synonyms
Sodium metabisulfite, SO2 58.5% | Sodium bisulfite anhydrous | Sodium metabisulfite | sodium meta-bisulfite | Sodium pyrosulfite | UNII-4VON5FNS3C | EC 231-673-0 | SODIUM METABISULFITE [WHO-DD] | Sodium metabisulphite | Disodium metabisulfite | DISODIUM P
Storage
Room temperature,Argon charged
Shipped In
FedEx DG Service
★
Size
USA
독일 (EU)*
Price
Qty
100g
S112440-100g
주문제작 · 8~12주
US$13.90
500g
S112440-500g
3 재고 있음
—
US$32.90
Enter a quantity for the sizes you want to add.
🧪
Why this grade

ACS ACS for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

🌡

Storage & shipping

Room temperature,Argon charged Ships FedEx DG Service Check lot-specific COA for exact specifications.

📋

Quality documents

SDS, COA, datasheet, and spec sheet available for download. Lot-specific COA accessible via lot number lookup.

📚

Literature proof

Cited in 42 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Specifications

동의어
Sodium metabisulfite, SO2 58.5% | Sodium bisulfite anhydrous | Sodium metabisulfite | sodium meta-bisulfite | Sodium pyrosulfite | UNII-4VON5FNS3C | EC 231-673-0 | SODIUM METABISULFITE [WHO-DD] | Sodium metabisulphite | Disodium metabisulfite | DISODIUM P
사양 및 순도
ACS
보관 조건
Room temperature,Argon charged
배송
FedEx DG Service
등급
ACS
이름과 식별자
Pubchem Sid
정식 스마일
[O-]S(=O)S(=O)(=O)[O-].[Na+].[Na+]
InChIKey
HRZFUMHJMZEROT-UHFFFAOYSA-L
INCHI
1S/2Na.H2O5S2/c;;1-6(2)7(3,4)5/h;;(H,1,2)(H,3,4,5)/q2*+1;/p-2
이성체 SMILES
[O-]S(=O)S(=O)(=O)[O-].[Na+].[Na+]
WGK 독일
1
RTECS
UX8225000
UN 번호
3335
포장 그룹
III
분자량
190.11

Documentation

📋 Safety Data Sheet (SDS)

Comprehensive hazard, handling, storage, and regulatory compliance document.

Download SDS →

✅ Certificate of Analysis (COA)

Lot-specific quality data. Enter your lot number to retrieve the exact COA.

Look up COA →

📊 Datasheet

Quick-reference summary of product specifications and applications.

View datasheet →

🔬 Specification Sheet

Full quality attributes and acceptance criteria for this grade.

View spec sheet →

Advanced Data

Taxonomic Classification

Taxonomy Tree

KingdomInorganic compounds
SuperclassMixed metal/non-metal compounds
분류Alkali metal oxoanionic compounds
SubclassAlkali metal dithionites
Intermediate Tree Nodes Not available
Direct ParentAlkali metal dithionites
Alternative Parents Inorganic sodium salts  Inorganic oxides  
Molecular FrameworkNot available
Substituents Alkali metal dithionite - Inorganic sodium salt - Inorganic oxide - Inorganic salt
설명This compound belongs to the class of inorganic compounds known as alkali metal dithionites. These are inorganic compounds in which the largest oxoanion is dithionite, and in which the heaviest atom not in an oxoanion is an alkali metal.
External Descriptors Not available
3D 구조
상호 작용 화학 구조 모델





작용 메커니즘
인증서(CoA, COO, BSE/TSE 및 분석 차트)
C of A & Other Certificates(BSE/TSE, COO):
Analytical Chart:

Find and download the COA for your product by matching the lot number on the packaging.

6 results found

Lot NumberCertificate Type날짜항목
A2605098Certificate of AnalysisAug 30, 2025 S112440
H2607083Certificate of AnalysisAug 30, 2025 S112440
I2519414Certificate of AnalysisAug 30, 2025 S112440
I2519499Certificate of AnalysisAug 30, 2025 S112440
I2519500Certificate of AnalysisAug 30, 2025 S112440
H2330586Certificate of AnalysisAug 08, 2023 S112440
화학 및 물리적 특성
용해성Soluble in water, ethanol and glycerol
감도Hygroscopic;air sensitive
끓는점(°C)150°C
녹는점(°C)>300 °C
분자량190.110 g/mol
XLogP3
Hydrogen Bond Donor Count0
Hydrogen Bond Acceptor Count6
Rotatable Bond Count0
Exact Mass189.898 Da
Monoisotopic Mass189.898 Da
Topological Polar Surface Area125.000 Ų
Heavy Atom Count9
Formal Charge0
Complexity136.000
Isotope Atom Count0
Defined Atom Stereocenter Count0
Undefined Atom Stereocenter Count0
Defined Bond Stereocenter Count0
Undefined Bond Stereocenter Count0
The total count of all stereochemical bonds0
Covalently-Bonded Unit Count3
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Citations of This Product
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