Key Documents

Crystal violet (C.I. 42555)

Name: Crystal violet (C.I. 42555)
Brand: MM
Price: 95.5 USD

pH indicator, ACS, Reag. Ph Eur

Synonym(s):

Crystal violet (C.I. 42555), Hexamethylenepararosaniline chloride, Gentian violet (C.I. 42555), Hexamethyl-p-rosanilinium, Methyl violet 10 B

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Pack Size	Availability	Price
25 g	Check Cart for Availability	$95.50
100 g	Check Cart for Availability	$335.00
1 kg	Check Cart for Availability	$2,380.00

About This Item

Empirical Formula (Hill Notation):

C₂₅H₃₀ClN₃

CAS Number:

548-62-9

Molecular Weight:

407.98

UNSPSC Code:

41116130

EC Index Number:

208-953-6

NACRES:

NA.21

MDL number:

MFCD00011750

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Properties

Product Name

Crystal violet (C.I. 42555), indicator ACS,Reag. Ph Eur

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

λ_max

589-594 nm in water

absorbance ratio

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

storage temp.

2-30°C

SMILES string

[Cl-].N(C)(C)c1ccc(cc1)[C+](c3ccc(cc3)N(C)C)c2ccc(cc2)N(C)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

Description

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 λ_max. (water): 589 - 594 nm
Spec. Absorptivity A 1%/1cm (λ_max; 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

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This Item	1.04137	C6158	05-6710
Supelco 1.01408 Crystal violet (C.I. 42555)	Sigma-Aldrich 1.04137 Crystal violet (C.I. 42555)	Sigma-Aldrich C6158 Crystal Violet	Sigma-Aldrich 05-6710 Crystal Violet
impurities <0.10% Michler′s ketone	impurities -	impurities -	impurities -
storage temp. 2-30°C	storage temp. 2-30°C	storage temp. room temp	storage temp. -
absorbance ratio 0.98-1.20 (Ratio, E (lambda_max - 15 nm)/E (lambda_max + 15 nm))	absorbance ratio -	absorbance ratio -	absorbance ratio -
mp 189-194 °C	mp 189-194 °C	mp 205 °C (dec.) (lit.)	mp 205 °C (dec.) (lit.)
pH 2.5-3.5 (20 °C, 10 g/L in H₂O)	pH 2.5-3.5 (20 °C, 10 g/L in H₂O)	pH 2.5-3.5 (20 °C, 10 g/L)	pH -
potency 420 mg/kg LD₅₀, oral (Rat)	potency 420 mg/kg LD₅₀, oral (Rat)	potency -	potency -

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pictograms

GHS05,GHS07,GHS08,GHS09

signalword

Danger

hcodes

H302 - H318 - H351 - H410

pcodes

P202 - P273 - P280 - P301 + P312 - P305 + P351 + P338 - P308 + P313

Hazard Classifications

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

Storage Class

11 - Combustible Solids

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c