MilliporeSigma
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1.05125

Supelco

Potassium thiocyanate

for analysis EMSURE® ACS,ISO,Reag. Ph Eur

Synonym(s):
Potassium thiocyanate, Potassium sulfocyanide
Empirical Formula (Hill Notation):
CKNS
CAS Number:
Molecular Weight:
97.18
MDL number:
EC Index Number:
206-370-1

Quality Level

grade

ACS reagent

Agency

reag. ISO
reag. Ph. Eur.

vapor pressure

<0.001 hPa ( 20 °C)

product line

EMSURE®

assay

≥99.0% (silver nitrate titration)

form

crystalline

potency

854 mg/kg LD50, oral (Rat)

impurities

≤0.003% Insoluble matter
≤0.025% Iodine consuming substances

pH

5.3-8.5 (20 °C, 50 g/L in H2O)

bp

>400 °C/1013 hPa (decomposition)

mp

177 °C

density

1.91 g/cm3 at 20 °C

bulk density

750‑1000 kg/m3

anion traces

chloride (Cl-): ≤0.005%
sulfate (SO42-): ≤0.002%
sulfide (S2-): ≤0.001%

cation traces

Cu: ≤0.0002%
Fe: ≤0.0001%
NH4+: ≤0.002%
Na: ≤0.005%
Pb: ≤0.0002%
heavy metals (as Pb): ≤0.0005%

storage temp.

2-30°C

InChI

1S/CHNS.K/c2-1-3;/h3H;/q;+1/p-1

InChI key

ZNNZYHKDIALBAK-UHFFFAOYSA-M

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Linkage

Replaces: PX1630; PX1630-20; PX1630-1

Analysis Note

Assay (argentometric): ≥ 99.0 %
Insoluble matter: ≤ 0.003 %
pH-value (5 %; water, 25 °C): 5.3 - 8.5
Chloride (Cl): ≤ 0.005 %
Sulfate (SO₄): ≤ 0.002 %
Sulphide (S): ≤ 0.001 %
Heavy metals (as Pb): ≤ 0.0005 %
Cu (Copper): ≤ 0.0002 %
Fe (Iron): ≤ 0.0001 %
Na (Sodium): ≤ 0.005 %
NH₄ (Ammonium): ≤ 0.002 %
Pb (Lead): ≤ 0.0002 %
Iodine consuming substances: ≤ 0.025 %
Corresponds to ACS,ISO,Reag. Ph Eur

Legal Information

EMSURE is a registered trademark of Merck KGaA, Darmstadt, Germany

Pictograms

CorrosionExclamation mark

Signal Word

Danger

Hazard Classifications

Acute Tox. 4 Dermal - Acute Tox. 4 Inhalation - Acute Tox. 4 Oral - Aquatic Chronic 3 - Eye Dam. 1

Supplementary Hazards

Storage Class Code

13 - Non Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis

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Certificate of Quality

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