A triarylmethane dye
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Pararosaniline (hydrochloride)

Item No. 38901

Product Insert (PDF)Safety Data Sheet (SDS) (PDF)
Technical Information
Formal Name
4,4′-[(4-imino-2,5-cyclohexadien-1-ylidene)methylene]bis-benzenamine, monohydrochloride
CAS Number
569-61-9
Synonyms
  • C.I. 42500
  • C.I. Basic Red
  • NSC 10460
  • Parafuschine
Molecular Formula
C19H17N3 • HCl
Formula Weight
323.8
Purity
≥95%
Formulation (Request formulation change)
A solid
Solubility(Learn about Variance in Solubility)
DMF: 1 mg/mlDMSO: 1 mg/mlEthanol: Slightly soluble
λmax
547 nm
SMILES
N=C1C=C/C(C=C1)=C(C2=CC=C(C=C2)N)\C3=CC=C(C=C3)N.Cl
InChi Code
InChI=1S/C19H17N3.ClH/c20-16-7-1-13(2-8-16)19(14-3-9-17(21)10-4-14)15-5-11-18(22)12-6-15;/h1-12,20H,21-22H2;1H
InChi Key
JUQPZRLQQYSMEQ-UHFFFAOYSA-N
Shipping & Storage Information
Storage
-20°C
Shipping
Wet ice in continental US; may vary elsewhere
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    Product Description

    Pararosaniline is a triarylmethane dye.1 Dietary administration of pararosaniline (2,000 ppm) induces tumor formation in rats and mice.2 Pararosaniline has been found as a contaminant in textile factory air and processed foods.1,3

    WARNING This product is not for human or veterinary use.

    References & Product Citations
    Product Description References

    1. Kowalska, J., and Jeżewska, A. Determination of pararosaniline hydrochloride in workplace air. Environ. Monit. Assess. 191(7), 444 (2019).

    2.  NTP toxicology and carcinogenesis studies of C.I. basic red 9 monohydrochloride (pararosaniline) (CAS No. 569-61-9) In F344/N rats and B6C3F1 mice (feed studies). Natl. Toxicol. Program Tech. Rep. Ser. 285, 1-228 (1986).

    3. Tatebe, C., Zhong, X., Ohtsuki, T., et al. A simple and rapid chromatographic method to determine unauthorized basic colorants (rhodamine B, auramine O, and pararosaniline) in processed foods. Food Sci. Nutr. 2(5), 547-556 (2014).