Chemical Properties Uses
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Sodium thiocyanate

Chemical Properties Uses
Product Name
Sodium thiocyanate
CAS No.
540-72-7
Chemical Name
Sodium thiocyanate
Synonyms
sodium cyanosulfanide;Sodium isothiocyanate (texniy technical grade;scyan;haimased;usafek-t-434;SODIUM THIOCY;natriumrhodanid;SODIUM RHODANATE;SODIUM RHODANIDE;Guaiacol 90-05-1
CBNumber
CB3853771
Molecular Formula
CNNaS
Formula Weight
81.07
MOL File
540-72-7.mol
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Sodium thiocyanate Property

Melting point:
287 °C (dec.) (lit.)
Density 
1.295 g/mL at 20 °C
bulk density
800-1000kg/m3
vapor pressure 
<1 hPa (20 °C)
refractive index 
1.545
storage temp. 
Store at +5°C to +30°C.
solubility 
H2O: 8 M at 20 °C, clear, colorless
form 
Solid
color 
White
PH
6-8 (100g/l, H2O, 20℃)
Odor
Odorless
Water Solubility 
139 g/100 mL (21 ºC)
Sensitive 
Hygroscopic
Merck 
14,9327
BRN 
3594965
Exposure limits
NIOSH: IDLH 25 mg/m3
Stability:
Stable. Incompatible with acids, strong bases. May decompose on exposure to light. Contact with acid liberates highly toxic gas.
InChIKey
VGTPCRGMBIAPIM-UHFFFAOYSA-M
LogP
0.58
CAS DataBase Reference
540-72-7(CAS DataBase Reference)
EPA Substance Registry System
Sodium thiocyanate (540-72-7)
Absorption
cut-off at 276nm in H2O at 8M
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Safety

Hazard Codes 
Xn
Risk Statements 
32-52/53-20/21/22-36
Safety Statements 
36/37-61-13-46-26
WGK Germany 
1
RTECS 
XL2275000
F 
3
TSCA 
Yes
HS Code 
28429011
Toxicity
LD50 orally in rats: 764 mg/kg; i.v. in mice: 484 mg/kg (Anderson, Chen)
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Danger
Hazard statements

H318Causes serious eye damage

H412Harmful to aquatic life with long lasting effects

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P280Wear protective gloves/protective clothing/eye protection/face protection.

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
80518
Product name
Sodium thiocyanate solution
Purity
BioUltra, 8?M in H2O
Packaging
100mL
Price
$41.2
Updated
2024/03/01
Sigma-Aldrich
Product number
80518
Product name
Sodium thiocyanate solution
Purity
BioUltra, 8?M in H2O
Packaging
500mL
Price
$135
Updated
2024/03/01
Sigma-Aldrich
Product number
251410
Product name
Sodium thiocyanate
Purity
ACS reagent, ≥98.0%
Packaging
2.5kg
Price
$733
Updated
2024/03/01
Sigma-Aldrich
Product number
1.06627
Product name
Sodium thiocyanate
Purity
EMPLURA?
Packaging
2.5kg
Price
$419
Updated
2024/03/01
Alfa Aesar
Product number
033388
Product name
Sodium thiocyanate, ACS
Purity
98.0% min
Packaging
100g
Price
$48.3
Updated
2024/03/01
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Sodium thiocyanate Chemical Properties,Usage,Production

Chemical Properties

Sodium thiocyanate, a white rhombic system crystal, is soluble in water, ethanol, acetone; Relative density is 1.735. Melts at approx. 287℃. Decomposes on heating and under influence of light producing toxic fumes of sulfur oxides,nitrogen oxides and cyanides. Reacts violently with acids,strong bases and strong oxidants.

Uses

Sodium thiocyanate is a valuable chemical raw material and has important uses in various sectors of the national economy. Sodium thiocyanate is mainly used as a solvent for spinning acrylic fibers, chemical analysis reagents, color film film rinses, certain plant defoliants, and airport road herbicides. Sodium thiocyanate is also used in pharmaceuticals, printing and dyeing, rubber processing, black nickel plating, and artificial mustard. Oil, etc. The main industrial production processes are: separation of sodium thiocyanate from waste liquid in coke oven gas, synthesis of sodium thiocyanate with sodium cyanide and sulfur, and production of sodium thiocyanate by metathesis reaction of ammonium thiocyanate and sodium hydroxide. The synthesis of sodium thiocyanate requires high purity HCN as raw material, which is costly and harsh.

Chemical Properties

white crystalline powder

Physical properties

Colorless crystals or white powder; deliquescent; melts at 287°C; very soluble in water; soluble in alcohol.

Uses

manufacture of other thiocyanates, especially organic.

Uses

Sodium Thiocyanate is used widely in chemical synthesis as source of thiocyanate anion such as in the conversion of alkyl halides to alkylthiocyanates.

Preparation

Sodium thiocyanate is prepared by boiling an aqueous solution of sodium cyanide with sulfur: NaCN + S → NaSCN.

Definition

ChEBI: An organic sodium salt which is the monosodium salt of thiocyanic acid.

Reactions

Sodium thiocyanate is an analytical reagent for measuring iodide. Other uses are dyeing and printing textiles, preparing thiocyanate salts, and nickel plating. Used in titrimetry.

General Description

Odorless white solid. Sinks and mixes with water.

Air & Water Reactions

Water soluble.

Reactivity Profile

Nitric acid violently oxidized a thiocyanate solution [Bretherick 1979 p. 121]. Caution should be exercised in treating a thiocyanate with an oxidizing agent such as a peroxide or chlorate as such mixtures have been known to explode. Special Hazards of Combustion Products: Irritating oxides of sulfur and nitrogen may form in fire [USCG, 1999]. Carbonyl sulfide is produced in a violent reaction by the mixture of sulfuric acid and Sodium thiocyanate.

Health Hazard

Inhalation of dust causes irritation of nose and throat. Ingestion of large doses causes vomiting, extreme cerebral excitement, convulsions, and death in 10-48 hrs.; chronic poisoning can cause flu-like symptoms, skin rashes, weakness, fatigue, vertigo, nausea, vomiting, diarrhea, confusion. Contact with eyes causes irritation. Prolonged contact with skin may produce various skin eruptions, dizziness, cramps, nausea, and mild to severe disturbance of the nervous system.

Fire Hazard

Special Hazards of Combustion Products: Irritating oxides of sulfur and nitrogen may form in fire.

Flammability and Explosibility

Non flammable

Safety Profile

Poison by ingestion, intravenous, and subcutaneous routes. Moderately toxic by intraperitoneal route. Large doses taken internally cause vomiting, convulsions. Chronic poisoning is manifested by weakness, confusion, diarrhea, and skin rashes. When heated to decomposition it emits very toxic fumes of NOx, SOx, and Na2O. See also THIOCYANATES.

Purification Methods

It is recrystallised from EtOH or Me2CO, and the mother liquor is removed from the crystals by centrifugation. It is very deliquescent and should be kept in an oven at 130o before use. It can be dried in a vacuum at 120o/P2O5 [Partington & Winterton Trans Faraday Soc 30 1104 1934]. Its solubility in H2O is 113% at 10o, 178% at 46o, 225.6% at 101.4o; in MeOH 35% at 15.8o, 51% at 48o, 53.5% at 52.3o; in EtOH 18.4% at 18.8o, 24.4% at 70.9o; and in Me2CO 6.85% at 18.8o and 21.4% at 56o [Hughes & Mead J Chem Soc 2282 1929]. Sodium thiocyanate has also been recrystallised from water, acetonitrile or from MeOH using Et2O for washing, then dried at 130o, or dried under vacuum at 60o for 2days. [Strasser et al. J Am Chem Soc 107 789 1985, Szezygiel et al. J Am Chem Soc 91 1252 1987.] (The latter purification removes material reacting with iodine.) Sodium thiocyanate solutions can be freed from traces of iron by repeated batch extractions with Et2O.

Sodium thiocyanate Preparation Products And Raw materials

Raw materials

Hydrogen Sulfide Sulfur ARSENIC (II) SULFIDE Barium hydroxide Ammonium thiocyanate Carbon disulfide Potassium sodium tartrate IRON (II) OXIDE Sodium cyanide Vanadium(V) oxide Sulphur Desulfurization Sodium carbonate Ammonia

Preparation Products

2-Amino-6-methoxybenzothiazole Albendazole ethyl 2-(2-aminothiazol-5-ylthio)acetate Basic Blue 54 Inhibitor Cuprous thiocyanate Robenidine hydrochloride N-Allylthiourea 2,6-Dichlorobenzothiazole METHYL THIOCYANOFORMATE 1-(1-NAPHTHYL)-2-THIOUREA Ammonium thiocyanate 2-chloro-3-isothiocyanato-prop-1-ene Methylene dithiocyanate 2-FLUOROBENZOTHIAZOLE 1-PHENYL-2-THIOUREA Basic Yellow 24 6-METHOXYBENZOTHIAZOLE-2-CARBOXYLIC ACID Thiophanate-methyl 4-METHOXYPHENYLTHIOUREA Tricyclazole Pyridaben 2-Amino-6-bromobenzothiazole METHYL(5-MERCAPTO-1H-BENZIMIDAZOL-2-YL)CARBAMATE Ammonium thiosulfate 2-Cyano-6-methoxybenzothiazole 2-CARBOMETHOXY-6-METHOXYBENZOTHIAZOLE
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View Lastest Price from Sodium thiocyanate manufacturers

Hebei Zhuanglai Chemical Trading Co.,Ltd
Product
Sodium Thiocyanate 540-72-7
Price
US $99.00-35.00/kg
Min. Order
1kg
Purity
99%
Supply Ability
20ton
Release date
2024-05-17
HebeiShuoshengImportandExportco.,Ltd
Product
Sodium thiocyanate 540-72-7
Price
US $6.00/kg
Min. Order
1kg
Purity
99%
Supply Ability
2000KG/Month
Release date
2024-08-06
Hebei Saisier Technology Co., LTD
Product
Sodium thiocyanate 540-72-7
Price
US $6.00/KG
Min. Order
1KG
Purity
More than 99%
Supply Ability
500KG/Month
Release date
2024-03-22

540-72-7, Sodium thiocyanateRelated Search:

Fluorescein isothiocyanate Sodium hydroxide Sodium benzoate Sodium citrate Ammonium thiocyanate Sodium acetate Sodium alginate Sodium bicarbonate Diclofenac sodium Potassium thiocyanate Trisodium phosphate Erythromycin thiocyanate SODIUM THIOCYANATE 98% AN Sodium bisulfate Cuprous thiocyanate Sodium hexafluorophosphate IODOACETIC ACID SODIUM SALT Potassium sodium tartrate

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