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1.01408

Supelco

Crystal violet (C.I. 42555)

indicator ACS,Reag. Ph Eur

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Synonym(s):
Crystal violet (C.I. 42555), Hexamethylenepararosaniline chloride, Gentian violet (C.I. 42555), Hexamethyl-p-rosanilinium, Methyl violet 10 B
Empirical Formula (Hill Notation):
C25H30ClN3
CAS Number:
548-62-9
Molecular Weight:
407.98
MDL number:
MFCD00011750
EC Index Number:
208-953-6

grade

ACS reagent

Quality Level

200

Agency

reag. Ph. Eur.

form

solid

potency

420 mg/kg LD50, oral (Rat)

composition

dye content, ≥90% spectrophotometric assay (calc. on dried substance)

impurities

<0.10% Michler′s ketone

loss

≤7.5% loss on drying, 110°C, 4 h

pH

2.5-3.5 (20 °C, 10 g/L in H2O)

mp

189-194 °C

solubility

10 g/L

density

1.19 g/cm3 at 20 °C

bulk density

220‑400 kg/m3

λmax

589-594 nm in water

absorbance ratio

0.98-1.20 (Ratio, E (lambdamax - 15 nm)/E (lambdamax +  15 nm))

storage temp.

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

InChI key

ZXJXZNDDNMQXFV-UHFFFAOYSA-M

Related Categories

Analysis Note

Dye content (spectrophotometrically; calc. on dried substance): ≥ 90.0%
Identity (UV/VIS-Spectrum): passes test
Absorbance characteristics (Ratio,E (λmax - 15 nm)/E (λmax +  15 nm)): 0.98 - 1.20
Absorption maximum λmax. (water): 589 - 594 nm
Spec. Absorptivity A 1%/1cm (λmax; 0.002 g/l; water): 2000 - 2450
TLC-Test: passes test
Michler`s ketone: <0.10%
Loss on drying (110 °C, 4 h): ≤ 7.5%
Suitability as indicator (ACS): passes test
Suitability as indicator (Reag. Ph. Eur.): passes test

Signal Word

Danger

Hazard Statements

H302 - H318 - H351 - H410

Hazard Classifications

Acute Tox. 4 Oral - Aquatic Acute 1 - Aquatic Chronic 1 - Carc. 2 - Eye Dam. 1

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

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