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Sodium thiocyanate

Sodium thiocyanate
Sodium thiocyanate structure
Chemical Name:
Sodium thiocyanate
scyan;haimased;usafek-t-434;SODIUM THIOCY;natriumrhodanid;SODIUM RHODANATE;SODIUM RHODANIDE;sodiumthiocyanide;thiocyanatesodium;Natriumthiocyanat
Molecular Formula:
Formula Weight:
MOL File:

Sodium thiocyanate Properties

Melting point:
287 °C (dec.)(lit.)
1.295 g/mL at 20 °C
vapor pressure 
<1 hPa (20 °C)
storage temp. 
H2O: 8 M at 20 °C, clear, colorless
6-8 (100g/l, H2O, 20℃)
Water Solubility 
139 g/100 mL (21 ºC)
Stable. Incompatible with acids, strong bases. May decompose on exposure to light. Contact with acid liberates highly toxic gas.
CAS DataBase Reference
540-72-7(CAS DataBase Reference)
EPA Substance Registry System
Thiocyanic acid, sodium salt(540-72-7)
  • Risk and Safety Statements
  • Hazard and Precautionary Statements (GHS)
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
HS Code  28429011
Toxicity LD50 orally in rats: 764 mg/kg; i.v. in mice: 484 mg/kg (Anderson, Chen)
Signal word: Danger
Hazard statements:
Code Hazard statements Hazard class Category Signal word Pictogram P-Codes
H302 Harmful if swallowed Acute toxicity,oral Category 4 Warning P264, P270, P301+P312, P330, P501
H312 Harmful in contact with skin Acute toxicity,dermal Category 4 Warning P280,P302+P352, P312, P322, P363,P501
H318 Causes serious eye damage Serious eye damage/eye irritation Category 1 Danger P280, P305+P351+P338, P310
H332 Harmful if inhaled Acute toxicity,inhalation Category 4 Warning P261, P271, P304+P340, P312
H412 Harmful to aquatic life with long lasting effects Hazardous to the aquatic environment, long-term hazard Category 3 P273, P501
Precautionary statements:
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P321 Specific treatment (see … on this label).
P304+P340 IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.

Sodium thiocyanate price More Price(18)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 08536 Sodium thiocyanate 2 M solution 540-72-7 1ml-f $51.7 2018-11-13 Buy
Sigma-Aldrich 251410 Sodium thiocyanate ACS reagent, ≥98.0% 540-72-7 2.5kg $569 2018-11-13 Buy
Alfa Aesar 033388 Sodium thiocyanate, ACS 98.0% min 540-72-7 500g $78 2018-11-20 Buy
Alfa Aesar 033388 Sodium thiocyanate, ACS 98.0% min 540-72-7 100g $34.6 2018-11-20 Buy
Sigma-Aldrich 251410 Sodium thiocyanate ACS reagent, ≥98.0% 540-72-7 100g $48.8 2018-11-13 Buy

Sodium thiocyanate Chemical Properties,Uses,Production

Chemical Properties

white crystalline powder


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.


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


manufacture of other thiocyanates, especially organic.

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.

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

Preparation Products

Sodium thiocyanate Suppliers

Global( 236)Suppliers
Supplier Tel Fax Email Country ProdList Advantage
Hangzhou Bayee Chemical Co., Ltd.
0086-571-86990109; 0086-18605816692
0086-571-85775919 China 98 55
Henan DaKen Chemical CO.,LTD.
+86-371-55531817 CHINA 22043 58
Henan Tianfu Chemical Co.,Ltd.
0371-55170693 CHINA 20786 55
Shanghai Time Chemicals CO., Ltd.
+86-021-57951555 CHINA 1374 55
Mainchem Co., Ltd.
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Hefei TNJ Chemical Industry Co.,Ltd.
86-0551-65418684 18949823763
86-0551-65418684 China 1662 55
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Chemwill Asia Co.,Ltd.
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Hubei Jusheng Technology Co.,Ltd.
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Haihang Industry Co.,Ltd
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View Lastest Price from Sodium thiocyanate manufacturers

Image Release date Product Price Min. Order Purity Supply Ability Manufacturer
2018-07-23 Sodium thiocyanate
US $950.00 / KG 1000KG 98% 100tons career henan chemical co

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