1.05134
Potassium sulfide
small lumps for analysis EMSURE®
Synonym(s):
Potassium sulfide, Potassium monosulfide
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About This Item
Quality Segment
grade
reagent grade
product line
EMSURE®
form
solid
concentration
≥44% (complexometric K2S basis)
pH
13 (20 °C, 10 g/L in H2O)
mp
200-250 °C
solubility
500 g/L
density
1.65 g/cm3 at 20 °C
bulk density
1000‑1200 kg/m3
anion traces
sulfite (SO32-): ≤1%, thiosulfate (S2O32-): ≤20
cation traces
N: ≤0.01%
storage temp.
no temp limit
InChI
1S/4K.H2O3S2.S/c;;;;1-5(2,3)4;/h;;;;(H2,1,2,3,4);/q;;2*+1;;/p-2
InChI key
PFSBHPPVZHPSCB-UHFFFAOYSA-L
Analysis Note
Sulfite (SO₃): ≤ 1 %
Thiosulfate (S₂O₃): about 20
Total nitrogen (N): ≤ 0.01 %
Legal Information
1 of 1
This Item | |||
|---|---|---|---|
| description small lumps for analysis EMSURE® | description 99.999 Suprapur® | description for analysis EMSURE® ACS,ISO,Reag. Ph Eur | description anhydrous for analysis EMSURE® |
| form solid | form solid | form solid | form solid |
| solubility 500 g/L | solubility 111 g/L | solubility water: soluble (120 g/l) | solubility 1600 g/L |
| Quality Level 300 | Quality Level 100 | Quality Level 300 | Quality Level 300 |
| grade reagent grade | grade - | grade ACS reagent | grade reagent grade |
| cation traces N: ≤0.01% | cation traces - | cation traces As: ≤0.0002%, Ca: ≤0.005%, Fe: ≤0.0005%, Mg: ≤0.002%, N: ≤0.0005%, Na: ≤0.02%, heavy metals: ≤0.0005% ((ACS)) | cation traces Fe: ≤0.0010%, N: ≤0.001%, Na: ≤0.5%, heavy metals (as Pb): ≤0.0005% |
| mp 200-250 °C | mp 1069 °C | mp 1069 °C | mp - |
signalword
Danger
hcodes
Hazard Classifications
Aquatic Acute 1 - Eye Dam. 1 - Skin Corr. 1B
supp_hazards
wgk
WGK 3
Storage Class
8A - Combustible corrosive hazardous materials
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