Vat Red 41

CAS NO.：522-75-8
Empirical Formula: C16H8O2S2
Molecular Weight: 296.36
MDL number: MFCD00191692
EINECS: 208-336-1
SAFETY DATA SHEET (SDS)
Update Date: 2023-06-08 17:06:34

What is Vat Red 41?

The Uses of Vat Red 41

Thioindigo (cas# 522-75-8) is a useful research chemical. This compound is a dye that is used as an aqueous ink jet for producing recordings and in recyclable food trays.

Flammability and Explosibility

Not classified

Purification Methods

Adsorb it on silica gel from CCl4/*benzene (3:1), elute with *benzene, evaporate, crystallise the residue from CHCl3 and dry it at 60-65o [Wyman & Brode J Am Chem Soc 73 1487 1951; this paper also gives details of purification of other thioindigo dyes]. [Beilstein 19 H 137, 19 I 690, 19 II 192, 19 III/IV 2091.]

Properties and Applications

Standard	Ironing Fastness		Light Fastness	Persperation Fastness		Washing Fastness
Standard	Fading	Stain	Light Fastness	Fading	Stain	Fading	Stain
AATCC	5	5	7	5	5	5	5

Properties of Vat Red 41

Melting point:	280°C(lit.)
Boiling point:	407.96°C (rough estimate)
Density	1.3686 (rough estimate)
vapor pressure	0Pa at 25℃
refractive index	1.5341 (estimate)
form	powder to crystal
Colour Index	73300
color	Orange to Brown to Dark purple
Water Solubility	1mg/L
CAS DataBase Reference	522-75-8(CAS DataBase Reference)
EPA Substance Registry System	Benzo[b]thiophen-3(2H)-one, 2-(3-oxobenzo[b]thien-2(3H)-ylidene)- (522-75-8)

Safety information for Vat Red 41

Signal word	Warning
Pictogram(s)	Exclamation Mark Irritant GHS07
GHS Hazard Statements	H315:Skin corrosion/irritation H317:Sensitisation, Skin H319:Serious eye damage/eye irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation
Precautionary Statement Codes	P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P280:Wear protective gloves/protective clothing/eye protection/face protection. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.