229253

Carminic acid

≥90% (HPLC)

• Sinonimo/i: Natural Red 4
• Formula empirica (notazione di Hill): C₂₂H₂₀O₁₃
• Numero CAS: 1260-17-9
• Peso molecolare: 492.39
• Colour Index: 75470
• Beilstein: 71651
• Numero CE: 215-023-3
• Numero MDL: MFCD00167028
• Codice UNSPSC: 12171500
• ID PubChem: 24853740
• NACRES: NA.47

Proprietà

• Livello qualitativo: 100
• Saggio: ≥90% (HPLC)
• Stato: powder
• Attività ottica: [α]20/D +3.1°, c = 1 in H₂O
• Colore: purple to red-purple; red to very dark red
• Punto di fusione: 136 °C
• Solubilità: 1 N acetic acid: 1%, clear to hazy, red
• λmax: 495 nm
• ε (coefficiente d’estinzione): ≥13000 at 222-228 nm in ethanol at 0.03 g/L; ≥18000 at 275-281 nm in ethanol at 0.03 g/L
• applicazioni: diagnostic assay manufacturing; hematology; histology
• Temperatura di conservazione: room temp
• Stringa SMILE: Cc1c(C(O)=O)c(O)cc2C(=O)c3c(O)c(O)c([C@@H]4O[C@H](CO)[C@@H](O)[C@H](O)[C@H]4O)c(O)c3C(=O)c12
• InChI: 1S/C22H20O13/c1-4-8-5(2-6(24)9(4)22(33)34)13(25)10-11(15(8)27)16(28)12(18(30)17(10)29)21-20(32)19(31)14(26)7(3-23)35-21/h2,7,14,19-21,23-24,26,28-32H,3H2,1H3,(H,33,34)/t7-,14-,19+,20-,21+/m1/s1; DGQLVPJVXFOQEV-JNVSTXMASA-N

Descrizione

Descrizione generale

Carmine is a cochineal product usually furnished as an aluminum and calcium salt of carminic acid. Carminic acid is used for human-medical cell diagnosis and serves the purpose of the histological investigation of sample material of human origin. It is suitable for staining nuclei in histological sections. It is utilized in various staining methods including the procedure for detection of glycogen and mucous substances (Best′s carmine), for nuclear staining, or vital staining.

Applicazioni

Carminic acid (CI 75470) is used in Orth′s lithium carmine technique for nuclear staining, Best′s stain for glycogen, and Southgates′s mucicarmine method.

Informazioni sulla sicurezza

• Codice della classe di stoccaggio: 11 - Combustible Solids
• Classe di pericolosità dell'acqua (WGK): WGK 2
• Dispositivi di protezione individuale: Eyeshields, Gloves, type N95 (US)