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221988

Sigma-Aldrich

Ammonium thiocyanate

ACS reagent, ≥97.5%

Synonym(s):

Ammonium rhodanide

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About This Item

Linear Formula:
NH4SCN
CAS Number:
1762-95-4
Molecular Weight:
76.12
Beilstein:
3595135
EC Number:
217-175-6
MDL number:
MFCD00011428
UNSPSC Code:
12352300
eCl@ss:
38060604
PubChem Substance ID:
329752288
NACRES:
NB.24
Assay:
≥97.5%
grade:
ACS reagent
form:
crystals
Pricing and availability is not currently available.

grade

ACS reagent

Quality Level

200

Assay

≥97.5%

form

crystals

impurities

≤0.004 meq/g I2 consumers
≤0.005% insolubles

ign. residue

≤0.025%

pH

4.5-6.0 (25 °C, 5% in H2O)

mp

152-154 °C (lit.)

anion traces

chloride (Cl-): ≤0.005%
sulfate (SO42-): ≤0.005%

cation traces

Fe: ≤3 ppm
heavy metals (as Pb): ≤5 ppm

SMILES string

N.SC#N

InChI

1S/CHNS.H3N/c2-1-3;/h3H;1H3

InChI key

SOIFLUNRINLCBN-UHFFFAOYSA-N

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General description

Ammonium thiocyanate is an inorganic salt commonly used for thiocyanation of organic compounds.[1][2][3][4]

Application

Ammonium thiocyanate may be used in the synthesis of the following:
  • Substituted 2-aminothiazole derivatives by reacting with [5]-halo ketone carbonyls in the presence of N-methylimidazole.5
  • Thiiranes from corresponding oxiranes in the presence of lithium tetrafluoroborate.[6]
Applied in the formation of novel two-dimensional Cd-SCN coordination solids with unusual and tailorable, checkerboard- or herringbone-patterned structures these structures are important steps toward technologically useful materials.[7]

Pictograms

CorrosionExclamation mark
GHS05,GHS07

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

EUH032

Storage Class Code

13 - Non Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

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Certificates of Analysis (COA)

Lot/Batch Number
MKCV4788
MKCT4683
MKCV3084
MKCV0711
MKCS7591

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Sodium thiocyanate

Schiff-Base Metal (II) Complexes as New Catalysts in the Efficient, Mild and Regioselective Conversion of 1, 2-Epoxyethanes to 2-Hydroxyethyl Thiocyanates with Ammonium Thiocyanate.
Sharghi H and Nasseri MA.
Bulletin of the Chemical Society of Japan, 76(1), 137-142 (2003)
Conversion of epoxides to thiiranes catalyzed with TiO(TFA)2 and TiCl3(OTf) in the presence of ammonium thiocyanate or thiourea.
Iranpoor N and Zeynizadeh B.
Synthetic Communications, 28(21), 3913-3918 (1998)
Thiocyanation of aromatic and heteroaromatic compounds using ammonium thiocyanate and I2O5.
Wu J, et al.
Synthetic Communications, 38(14), 2367-2373 (2008)
NBS or DEAD as effective reagents in α-thiocyanation of enolizable ketones with ammonium thiocyanate.
Reddy BVS, et al.
Tetrahedron Letters, 52(13), 1432-1435 (2011)
Regioselective thiocyanation of aromatic and heteroaromatic compounds using ammonium thiocyanate and oxone.
Wu G, et al.
Tetrahedron Letters, 46(35), 5831-5834 (2005)
View All Related Papers

Questions

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  1. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer

    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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  2. How can I determine the shelf life / expiration / retest date of this product?

    1 answer

    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

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