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Merck
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Key Documents

247626

Sigma-Aldrich

Sulfur dioxide solution

ACS reagent, ≥6%

동의어(들):

Sulfurous acid, Sulfurous anhydride

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About This Item

Linear Formula:
H2SO3
CAS Number:
Molecular Weight:
82.08
EC Number:
MDL number:
UNSPSC 코드:
12352300
PubChem Substance ID:
NACRES:
NB.24

Grade

ACS reagent

Quality Level

vapor density

2.3 (vs air)

분석

≥6% SO2 basis (by Na2S2O3, titration)

형태

liquid

농도

≥6%

무기 잔류물

≤0.005%

density

1.03 g/mL at 25 °C (lit.)

음이온 미량물

chloride (Cl-): ≤5 ppm

양이온 미량물

Fe: ≤5 ppm
heavy metals (as Pb): ≤2 ppm

SMILES string

OS(O)=O

InChI

1S/H2O3S/c1-4(2)3/h(H2,1,2,3)

InChI key

LSNNMFCWUKXFEE-UHFFFAOYSA-N

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일반 설명

Sulfurous acid (H2SO3), a weak diprotic acid, is formed when sulfur dioxide (SO2) dissolves in water. Sulfurous acid is a complex mixture of various hydrates of SO2 and the ions H3O+, S2O52- and HSO3-. The predominant species present in the solution are pH dependent.

애플리케이션

Sulfurous acid can be used as a reducing agent in chemical synthesis.

관련 제품

제품 번호
설명
가격

픽토그램

CorrosionExclamation mark

신호어

Danger

유해 및 위험 성명서

Hazard Classifications

Acute Tox. 4 Inhalation - Eye Dam. 1 - Skin Corr. 1B

Storage Class Code

8B - Non-combustible corrosive hazardous materials

WGK

WGK 1

Flash Point (°F)

Not applicable

Flash Point (°C)

Not applicable


시험 성적서(COA)

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문서 라이브러리 방문

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