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Sigma-Aldrich

Acid Green 25

Dye content ≥60 %

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Empirical Formula (Hill Notation):
C28H20N2Na2O8S2
CAS Number:
4403-90-1
Molecular Weight:
622.58
Colour Index Number:
61570
EC Number:
224-546-6
MDL number:
MFCD00001193
PubChem Substance ID:
24852842
NACRES:
NA.47

form

powder

Quality Level

100

composition

Dye content, ≥60%

mp

235-238 °C (lit.)

λmax

608 nm
642 nm (2nd)

ε (extinction coefficient)

≥10000 at 604-612 nm
≥10200 at 640-646 nm
≥20000 at 281-287 nm
≥22700 at 251-257 nm
≥6400 at 407-413 nm

application(s)

diagnostic assay manufacturing
hematology
histology

storage temp.

room temp

SMILES string

[Na+].[Na+].Cc1ccc(Nc2ccc(Nc3ccc(C)cc3S([O-])(=O)=O)c4C(=O)c5ccccc5C(=O)c24)c(c1)S([O-])(=O)=O

InChI

1S/C28H22N2O8S2.2Na/c1-15-7-9-19(23(13-15)39(33,34)35)29-21-11-12-22(30-20-10-8-16(2)14-24(20)40(36,37)38)26-25(21)27(31)17-5-3-4-6-18(17)28(26)32;;/h3-14,29-30H,1-2H3,(H,33,34,35)(H,36,37,38);;/q;2*+1/p-2

InChI key

FPAYXBWMYIMERV-UHFFFAOYSA-L

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General description

Acid green 25 is an anthraquinone, acid dye.

Application

Acid green 25 is commonly used in the textile industry to dye polyamide, wool, silk, and acrylic fibres.

Pictograms

Environment
GHS09

Hazard Statements

H411

Precautionary Statements

P273

Hazard Classifications

Aquatic Chronic 2

Storage Class Code

11 - Combustible Solids

WGK

WGK 2

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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W Hiebl et al.
Klinische Monatsblatter fur Augenheilkunde, 222(4), 309-311 (2005-04-22)
The azo dye trypan blue and the cyanine dye indocyanine green have been used in ophthalmology since the 1980 s to dye the anterior capsule in cataract operations and to stain epiretinal membranes in order to remove the membrana limitans
Xin-Hui Xu et al.
Molecules (Basel, Switzerland), 17(3), 2784-2795 (2012-03-08)
A new sorbent material, barium sulfate-Direct Blending Yellow D-3RNL hybrid (BSD), was synthesized and characterized by various methods. Both the anionic dyes, Reactive Brilliant Red X-3B and Weak Acid Green GS were hardly adsorbed by the BSD material, while the

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