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214566

Sigma-Aldrich

Acid Green 25

Dye content ≥60 %

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About This Item

Empirical Formula (Hill Notation):
C28H20N2Na2O8S2
CAS Number:
Molecular Weight:
622.58
Colour Index Number:
61570
EC Number:
MDL number:
UNSPSC Code:
12171500
PubChem Substance ID:
NACRES:
NA.47

form

powder

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

Hazard Statements

Precautionary Statements

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

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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