Reported in EPA TSCA Inventory.

DYE CONTENT: 80.0%
pH: 5
ABSORBANCE: 642 nm

The Acid Green 25, with the cas register number 4403-90-1, has its IUPAC name of disodium 5-methyl-2-[[4-(4-methyl-2-sulfonatoanilino)-9,10-dioxoanthracen-1-yl]amino]benzenesulfonate. And its product categories are various, including dyes and pigments; organics; aminoanthraquinones; anthraquinones; stains and dyes; stains&dyes. 

Some basic information of this chemical is below: This is a kind of green powder and is soluble in o-chlorophenol, slightly soluble in  acetone, ethanol and pyridine, while insoluble in chloroform and  methylbenzene. The color in concentrated sulfuric acid is dark blue and is turquoise blue when diluted. This chemical is used as a stain in microscopy, as a reagent for aluminum, as an acid-base indicator, and in the determination of fluorine. When contact with this chemical, avoid contacting with skin and eyes.

The characteristics of this chemical are as following: (1)ACD/LogP: 3.71; (2)# of Rule of 5 Violations: 2; (3)ACD/LogD (pH 5.5): -0.79; (4)ACD/LogD (pH 7.4): -0.79; (5)ACD/BCF (pH 5.5): 1; (6)ACD/BCF (pH 7.4): 1; (7)ACD/KOC (pH 5.5): 1; (8)ACD/KOC (pH 7.4): 1; (9)#H bond acceptors: 10; (10)#H bond donors: 4; (11)#Freely Rotating Bonds: 6; (12)Polar Surface Area: 166.12; (13)Tautomer Count: 8; (14)Exact Mass: 622.045646; (15)MonoIsotopic Mass: 622.045646; (16)Topological Polar Surface Area: 189; (17)Heavy Atom Count: 42; (18)Formal Charge: 0; (19)Complexity: 1060.

When it comes to the production method, you could follow the below steps. Prepare the material of 1,4-dihydroxyanthracenequinone and paratoluidine, and then condense the 1,4-dihydroxyanthracenequinone and paratoluidine in presence of boric acid and zinc powder; Next sulfonate and neutralize with fuming sulphuric acid to get the crude; Lastly, go through the salting out, filtering, drying and smashing to get the products.

As to its usage, it is widely applied in many ways. It could be used in the dyeing of silk, wool, nylon, and other blend fabrics, and also in the coloring of leather, papering, cosmetic, soap, wood work, biological products and Alumite.

In addition, you could convert the following datas into the molecular structure：
(1)Canonical SMILES: CC1=CC(=C(C=C1)NC2=C3C(=C(C=C2)NC4=C(C=C(C=C4)C)S(=O)(=O)[O-])C(=O)C5=
CC=CC=C5C3=O)S(=O)(=O)[O-].[Na+].[Na+]
(2)InChI: 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 

Below are the toxicity information of this chemical: