255556
偏亚硫酸氢钠
ACS reagent, ≥97.0%
别名:
偏二亚硫酸钠, 焦亚硫酸钠
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关于此项目
线性分子式:
Na2S2O5
化学文摘社编号:
分子量:
190.11
UNSPSC Code:
12352302
PubChem Substance ID:
EC Number:
231-673-0
MDL number:
Assay:
≥97.0%
Grade:
ACS reagent
Form:
chunks, crystalline powder, powder, crystals or granules
InChI key
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
SMILES string
[Na+].[Na+].[O-]S(=O)S([O-])(=O)=O
grade
ACS reagent
assay
≥97.0%
form
chunks, crystalline powder, powder, crystals or granules
impurities
≤0.005% insolubles
pH
4.5 (20 °C, 50 g/L)
mp
>300 °C (lit.)
anion traces
chloride (Cl-): ≤0.05%, thiosulfate (S2O32-): ≤0.05%
cation traces
Fe: ≤0.002%, heavy metals (as Pb): ≤0.001%
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Other Notes
A -D suffix exists for administrative purposes only.
All -D packages are 100% the same product, same quality, same specification as the package sizes previously sold without a -D.
All -D packages are 100% the same product, same quality, same specification as the package sizes previously sold without a -D.
signalword
Danger
hcodes
Hazard Classifications
Acute Tox. 4 Oral - Eye Dam. 1
supp_hazards
存储类别
13 - Non Combustible Solids
wgk
WGK 1
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
dust mask type N95 (US), Eyeshields, Gloves
法规信息
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