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R4126

Sigma-Aldrich

Reinecke salt

Synonym(s):

Ammonium reineckate, Ammonium tetrarhodanatodiamminechromate(III), Ammonium tetrathiocyanatodiamminechromate(III), Ammonium tetrathiocyanodiammonochromate

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About This Item

Linear Formula:
NH4[Cr(NH3)2(SCN)4]
CAS Number:
13573-16-5
Molecular Weight:
336.43
EC Number:
237-003-3
MDL number:
MFCD00066638
UNSPSC Code:
12352302
PubChem Substance ID:
329824029
NACRES:
NA.21

form

powder

mp

268-272 °C (dec.) (lit.)

SMILES string

N.N.[NH4+].N#CS[Cr-](SC#N)(SC#N)SC#N

InChI

1S/4CHNS.Cr.3H3N/c4*2-1-3;;;;/h4*3H;;3*1H3/q;;;;+3;;;/p-3

InChI key

ZGLIQORZYPZFPW-UHFFFAOYSA-K

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Application

Reinecke salt can be used as a precipitation reagent for the precipitation of basic compounds such as amines, amino acids, and alkaloids as their reineckate complexes. It is also used in the spectrophotometric determination of promazine along with alizarin S by the formation of the promazine ion-association complex.

Pictograms

Exclamation mark
GHS07

Signal Word

Warning

Hazard Statements

H302 + H312 + H332

Hazard Classifications

Acute Tox. 4 Dermal - Acute Tox. 4 Inhalation - Acute Tox. 4 Oral

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Sheikha M Al-Ghannam
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 69(4), 1188-1194 (2007-08-11)
Three accurate, rapid and simple atomic absorption spectrometric (AAS), conductometric and colorimetric methods were developed for the determination of gatifloxacin (GTF), moxifloxacin (MXF) and sparfloxacin (SPF). The proposed methods depend upon the reaction of ammonium reineckate with the studied drugs
M F el-Shahat et al.
Journal of chemical technology and biotechnology (Oxford, Oxfordshire : 1986), 54(2), 175-181 (1992-01-01)
A spectrophotometric method for the determination of some alkaloids (namely ephedrine HCl, cinchonine HCl, chlorpheniramine maleate, atropine sulphate and diphenhydramine HCl) as separate compounds as well as in pharmaceutical preparations through the formation of their ion-pair (reineckate complexes) is described.
Preparation of histones by the use of Reinecke salt.
Lindh NO and Brantmark BL.
Analytical Biochemistry, 10(3), 415-420 (1965)
L Campanella et al.
Journal of pharmaceutical and biomedical analysis, 14(8-10), 1047-1054 (1996-06-01)
A new cocaine-sensitive ISFET device based on a cocaine-reineckate ion-pair complex dispersed in a PVC--sebacate matrix has been fabricated. this sensor displays a linear range for cocaine hydrochloride between about 3 x 10(-6) and 2 x 10(-2) M and a
M Eisman et al.
Journal of pharmaceutical and biomedical analysis, 11(4-5), 301-305 (1993-04-01)
An automatic method for the determination of amylocaine and bromhexine hydrochloride by atomic absorption spectrometry (AAS) is proposed. The drugs were determined indirectly by formation of reineckates, extraction into 1,2-dichloroethane and measurement of chromium in the organic phase. The chemical
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