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3425-46-5

Basic Information
CAS No.: 3425-46-5
Name: Potassium selenocyanate
Article Data: 45
Molecular Structure:
Molecular Structure of 3425-46-5 (Potassium selenocyanate)
Formula: CKNSe
Molecular Weight: 144.076
Synonyms: Selenocyanic acid, potassium salt;
EINECS: 222-320-1
Density: 2.347 g/cm3

Melting Point: 147 °C
Boiling Point: 134.2oC at 760 mmHg
Flash Point: 35oC
Solubility: Soluble in water, ethanol, dimethyl formamide, hexamethylphosphoramide, acetonitrile and methanol. Slightly soluble in terahydrofuran.
Appearance: white to light beige crystalline powder or needles
Hazard Symbols: ToxicT,DangerousN
Risk Codes: 23/25-33-50/53
Safety: 20/21-28-45-60-61
Transport Information: UN 3283 6.1/PG 2
PSA: 23.79000
LogP: -0.36402
Synthetic route

potassium cyanide

3425-46-5

potassium selenocyanate

Conditions
ConditionsYield
With selenium In methanol at 20℃; for 1h;94%
With selenium In ethanol for 3h; Reflux;
With selenium In methanol at 20℃; for 0.5h;
With selenium In ethanol

potassium cyanide

selenium

3425-46-5

potassium selenocyanate

Conditions
ConditionsYield
With acetone In melt mixt. of KCN and Se heated to melting, allowed to stand for 15 min at room temp., dry acetone added dropwise, refluxed for 2 h; allowed to stand for 2 h in dark, concd. in vac., filtered, washed with cold ether;67%
151-50-8

potassium cyanide

3425-46-5

potassium selenocyanate

Conditions
ConditionsYield
With selenium; water
With selenium at 150 - 160℃; Aufnehmen der Schmelze in Aceton und Einleiten von CO2;
With selenium; ammonia
potassium ferro cyanide

potassium ferro cyanide

3425-46-5

potassium selenocyanate

Conditions
ConditionsYield
With selenium
7782-49-2

selenium

potassium ferrocyanide

3425-46-5

potassium selenocyanate

Conditions
ConditionsYield
In melt no formation of CS2 during melting;;
In melt byproducts: iron selenide, N2, carbon diselenide; melting;;
In melt dissolving with H2O or alcohol;
In melt K4Fe(CN)6 and Se melted together at 250°C; extracted with acetone;
In melt dissolving with H2O or alcohol;

potassium cyanide

7782-49-2

selenium

A

potassium selenide

B

3425-46-5

potassium selenocyanate

Conditions
ConditionsYield
In melt under H2;;

potassium cyanide

7782-49-2

selenium

3425-46-5

potassium selenocyanate

Conditions
ConditionsYield
250-260°C;
In melt melting Se powder with KCN; heating melt for a long time with few H2O;;
In ethanol refluxing for 1 day with absolute ethanol;; evapn. of ethanol in vac., pptn.;;

Hg3O2SeO4=HgSeO4*2HgO

A

3425-46-5

potassium selenocyanate

B

mercury

Conditions
ConditionsYield
With potassium cyanide strong, dry heating;
With KCN strong, dry heating;

potassium polyselenide

A

potassium polyselenide

B

3425-46-5

potassium selenocyanate

Conditions
ConditionsYield
With potassium cyanide In ammonia room temp.;
With KCN In ammonia NH3 (liquid); room temp.;

potassium cyanide

selenium

3425-46-5

potassium selenocyanate

Conditions
ConditionsYield
In water byproducts: K2CO3; removing of K2CO3 with alcohol;
in alcohol;
In water byproducts: K2CO3; removing of K2CO3 with alcohol;
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  • POTASSIUM SELENOCYANATE CAS No.3425-46-5

  • Casno:

    3425-46-5

    POTASSIUM SELENOCYANATE CAS No.3425-46-5

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Consensus Reports

Cyanide and its compounds, as well as selenium and its compounds, are on the Community Right-To-Know List. Reported in EPA TSCA Inventory.

Standards and Recommendations

OSHA PEL: TWA 5 mg(CN)/m3; TWA 0.2 mg(Se)/m3
ACGIH TLV: CL 5 mg(CN)/m3 (skin); TWA 0.2 mg(Se)/m3
DFG MAK: 5 mg/m3
NIOSH REL: TWA CL 5 mg/m3/10M

Specification

The Potassium selenocyanate, with the CAS registry number 3425-46-5, is also known as Selenocyanic acid, potassium salt. It belongs to the product categories of Inorganics; Metal and Ceramic Science; Potassium Salts; Salts. Its EINECS registry number is 222-320-1. This chemical's molecular formula is CKNSe and molecular weight is 144.08. What's more, its IUPAC name is the same with its product name. It should be stored in a cool, dry and well-ventilated place.

Computed properties about Potassium selenocyanate are: (1)H-Bond Donor: 0; (2)H-Bond Acceptor: 2; (3)Rotatable Bond Count: 0; (4)Exact Mass: 144.883303; (5)MonoIsotopic Mass: 144.883303; (6)Topological Polar Surface Area: 23.8; (7)Heavy Atom Count; 4; (8)Formal Charge: 0; (9)Complexity: 31.3; (10)Isotope Atom Count: 0; (11)Defined Atom Stereocenter Count: 0; (12)Undefined Atom Stereocenter Count: 0; (13)Defined Bond Stereocenter Count: 0; (14)Undefined Bond Stereocenter Count: 0; (15)Covalently-Bonded Unit Count: 2.

When you are dealing with this chemical, you should be very careful. This chemical causes damage to health at low levels and it is toxic if swallowed. It may cause inflammation to the skin or other mucous membranes and may present an immediate or delayed danger to one or more components of the environment. In addition, it is very toxic to aquatic organisms and may cause long-term adverse effects in the aquatic environment. Therefore, you should avoid releasing to the environment. This material and its container must be disposed of as hazardous waste. When using you can not eat, drink or smoke. In case of accident or if you feel unwell seek medical advice immediately.

You can still convert the following datas into molecular structure:
(1) SMILES: C(#N)[Se-].[K+]
(2) InChI: InChI=1S/CHNSe.K/c2-1-3;/h3H;/q;+1/p-1
(3) InChIKey: KYEKHFSRAXRJBR-UHFFFAOYSA-M

The toxicity data is as follows:

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
guinea pig LD50 skin 50mg/kg (50mg/kg) SKIN AND APPENDAGES (SKIN): "DERMATITIS, OTHER: AFTER SYSTEMIC EXPOSURE" National Technical Information Service. Vol. OTS0536978,
mouse LD50 intraperitoneal 25mg/kg (25mg/kg) BEHAVIORAL: TREMOR

BEHAVIORAL: IRRITABILITY

KIDNEY, URETER, AND BLADDER: OTHER CHANGES IN URINE COMPOSITION
National Technical Information Service. Vol. OTS0536978,
mouse LD50 oral 25mg/kg (25mg/kg) BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY)

BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD

KIDNEY, URETER, AND BLADDER: OTHER CHANGES IN URINE COMPOSITION
National Technical Information Service. Vol. OTS0536978,
rat LD50 oral 10mg/kg (10mg/kg) BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY)

GASTROINTESTINAL: "HYPERMOTILITY, DIARRHEA"

KIDNEY, URETER, AND BLADDER: OTHER CHANGES IN URINE COMPOSITION
National Technical Information Service. Vol. OTS0536978,
rat LDLo intraperitoneal 200mg/kg (200mg/kg)   National Academy of Sciences, National Research Council, Chemical-Biological Coordination Center, Review. Vol. 5, Pg. 28, 1953.