1.04137

Crystal violet (C.I. 42555)

• Formula empirica (notazione di Hill): C₂₅H₃₀ClN₃
• Numero CAS: 548-62-9
• Peso molecolare: 407.98
• Numero MDL: MFCD00011750

Proprietà

• Forma fisica: solid
• Livello qualitativo: 200
• Potenza: 420 mg/kg LD₅₀, oral (Rat)
• Composizione: Dye, ≥88% spectrophotometric assay
• pH: 2.5-3.5 (20 °C, 10 g/L in H₂O)
• Punto di fusione: 189-194 °C
• Solubilità: 10 g/L
• Densità: 1.19 g/L at 20 °C
• Densità bulk: 220‑400 kg/m³
• applicazioni: diagnostic assay manufacturing; hematology; histology
• Temperatura di conservazione: 2-30°C
• InChI: 1S/C25H30N3.ClH/c1-26(2)22-13-7-19(8-14-22)25(20-9-15-23(16-10-20)27(3)4)21-11-17-24(18-12-21)28(5)6;/h7-18H,1-6H3;1H/q+1;/p-1; ZXJXZNDDNMQXFV-UHFFFAOYSA-M

Descrizione

Descrizione generale

Crystal violet (C.I. 42555) for microscopy Certistain^®, is a dry dye that can be used to produce a Crystal violet staining solution to differentiate Gram-positive and Gram-negative bacteria in samples of human origin. In the case of Gram-positive bacteria, the bacteria retain their dark blue / dark purple color even after the treatment with decolorizing solution. On the other side Gram-negative bacteria are stained red or pink with the counterstain. As CERTISTAIN^® dye it is chemically quality-certified according to highest standards and strict specifications.

Applicazioni

for microscopy Certistain^®

Risultati analitici

Dye content (spectrophotometrically): ≥ 88%
Identity (UV/VIS-Spectrum): passes test
Absorption maximum λ max (water): 589 - 594 nm
Spec. Absorptivity A 1%/1cm (λ_max; 0.002 g/l; water): 2050 - 2450
TLC-Test: passes test
Michler`s ketone: <0.10%
Loss on drying (110 °C): ≤ 10%
Suitability for microscopy: passes test

Note legali

CERTISTAIN is a registered trademark of Merck KGaA, Darmstadt, Germany

Informazioni sulla sicurezza

• Pittogrammi: GHS05,GHS07,GHS08,GHS09
• Avvertenze: Danger
• Indicazioni di pericolo: H302 - H318 - H351 - H410
• Consigli di prudenza: P202 - P273 - P280 - P301 + P312 - P305 + P351 + P338 - P308 + P313
• Classi di pericolo: Acute Tox. 4 Oral - Aquatic Acute 1 - Aquatic Chronic 1 - Carc. 2 - Eye Dam. 1
• Codice della classe di stoccaggio: 11 - Combustible Solids
• Classe di pericolosità dell'acqua (WGK): WGK 3
• Punto d’infiammabilità (°F): Not applicable
• Punto d’infiammabilità (°C): Not applicable