247626
二氧化硫 溶液
ACS reagent, ≥6%
别名:
亚硫酐, 亚硫酸
登录 查看组织和合同定价。
选择规格
变更视图
关于此项目
线性分子式:
H2SO3
化学文摘社编号:
分子量:
82.08
NACRES:
NB.24
PubChem Substance ID:
UNSPSC Code:
12352300
EC Number:
231-973-1
MDL number:
Assay:
≥6% SO2 basis (by Na2S2O3, titration)
Concentration:
≥6%
Form:
liquid
Grade:
ACS reagent
grade
ACS reagent
Quality Segment
vapor density
2.3 (vs air)
assay
≥6% SO2 basis (by Na2S2O3, titration)
form
liquid
concentration
≥6%
ign. residue
≤0.005%
density
1.03 g/mL at 25 °C (lit.)
anion traces
chloride (Cl-): ≤5 ppm
cation traces
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
General description
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.
Application
Sulfurous acid can be used as a reducing agent in chemical synthesis.
Still not finding the right product?
Explore all of our products under 二氧化硫 溶液
signalword
Danger
wgk
WGK 1
flash_point_f
Not applicable
flash_point_c
Not applicable
target_organs
Respiratory system
hcodes
Hazard Classifications
Acute Tox. 4 Inhalation - Eye Dam. 1 - Skin Corr. 1B - STOT SE 1 Inhalation
存储类别
6.1D - Non-combustible acute toxic Cat.3 / toxic hazardous materials or hazardous materials causing chronic effects