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Safety Information

1.01408

Supelco

Crystal violet (C.I. 42555)

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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About This Item

Empirical Formula (Hill Notation):
C25H30ClN3
CAS Number:
548-62-9
Molecular Weight:
407.98
MDL number:
MFCD00011750
UNSPSC Code:
41116130
EC Index Number:
208-953-6
NACRES:
NA.21

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

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

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

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

ISHL Indicated Name

Substances Subject to be Indicated Names

ISHL Notified Names

Substances Subject to be Notified Names

Certificates of Analysis (COA)

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