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关于此项目
经验公式(希尔记法):
K2O7S2
化学文摘社编号:
分子量:
254.32
UNSPSC Code:
12352302
EC Index Number:
232-216-8
NACRES:
NA.21
MDL number:
Assay:
97.5-100.0% (K2S2O7 basis, acidimetric)
Grade:
ACS reagent
Form:
solid
Solubility:
water: soluble (ca.25.4 g/l at 20 °C (68 °F))
grade
ACS reagent
Quality Level
product line
EMSURE®
assay
97.5-100.0% (K2S2O7 basis, acidimetric)
form
solid
impurities
≤0.01% Insoluble and by ammoniumhydroxide precipitated matter, ≤2.5% Water, 37.5-38.6% Acidity (as H2SO4)
pH
0.8 (20 °C, 50 g/L in H2O)
mp
325 °C
solubility
water: soluble (ca.25.4 g/l at 20 °C (68 °F))
bulk density
830 kg/m3
anion traces
chloride (Cl-): ≤0.0005%, phosphate (PO43-): ≤0.001%
cation traces
Al: ≤0.001%, As: ≤0.0005%, Ca: ≤0.002%, Fe: ≤0.0005%, Mg: ≤0.0005%, N: ≤0.002%, Na: ≤0.01%, heavy metals (as Pb): ≤0.001%
storage temp.
no temp limit
SMILES string
[K+].[K+].[S](=O)(=O)([O-])O[S](=O)(=O)[O-]
InChI
1S/2K.H2O7S2/c;;1-8(2,3)7-9(4,5)6/h;;(H,1,2,3)(H,4,5,6)/q2*+1;/p-2
InChI key
KAQHZJVQFBJKCK-UHFFFAOYSA-L
Analysis Note
Assay (acidimetric, as K₂S₂O₇): 97.5 - 100.0 %
Acidity (as H₂SO₄): 37.5 - 38.6 %
Insoluble and by ammoniumhydroxide precipitated matter: ≤ 0.01 %
Chloride (Cl): ≤ 0.0005 %
Phosphate (PO₄): ≤ 0.001 %
Total nitrogen (N): ≤ 0.002 %
Heavy metals (as Pb): ≤ 0.001 %
Al (Aluminium): ≤ 0.001 %
As (Arsenic): ≤ 0.0005 %
Ca (Calcium): ≤ 0.002 %
Fe (Iron): ≤ 0.0005 %
Mg (Magnesium): ≤ 0.0005 %
Na (Sodium): ≤ 0.01 %
Water (H₂O): ≤ 2.5 %
Conforms ACS.
Acidity (as H₂SO₄): 37.5 - 38.6 %
Insoluble and by ammoniumhydroxide precipitated matter: ≤ 0.01 %
Chloride (Cl): ≤ 0.0005 %
Phosphate (PO₄): ≤ 0.001 %
Total nitrogen (N): ≤ 0.002 %
Heavy metals (as Pb): ≤ 0.001 %
Al (Aluminium): ≤ 0.001 %
As (Arsenic): ≤ 0.0005 %
Ca (Calcium): ≤ 0.002 %
Fe (Iron): ≤ 0.0005 %
Mg (Magnesium): ≤ 0.0005 %
Na (Sodium): ≤ 0.01 %
Water (H₂O): ≤ 2.5 %
Conforms ACS.
Other Notes
Replaces: PX1581; PX1581-1; PX1581-3; PX1581-20; PX1581-5W; PX1581-5
Legal Information
EMSURE is a registered trademark of Merck KGaA, Darmstadt, Germany
signalword
Danger
hcodes
Hazard Classifications
Acute Tox. 3 Inhalation - Eye Dam. 1 - Skin Corr. 1A
存储类别
6.1B - Non-combustible acute toxic Cat. 1 and 2 / very toxic hazardous materials
wgk
WGK 1
全球贸易项目编号
| 货号 | GTIN |
|---|---|
| 1051075000 | 04022536061122 |
| 1051071000 | 04022536061108 |

