Oil Blue A

{{Chembox

| ImageFile = OilBlueA.svg

| ImageSize = 200px

| ImageName = Skeletal formula

| ImageFile1 = Oil Blue A 3D ball.png

| ImageSize1 = 210px

| ImageName1 = Ball-and-stick model

| PIN = 1,4-Bis[(propan-2-yl)amino]anthracene-9,10-dione

| OtherNames = {{unbulleted list|Unisol Blue AS|Solvent Blue 36|Solvent Blue A|Oil Blue G|Blue AP|CI 61551}}

|Section1={{Chembox Identifiers

| CASNo = 14233-37-5

| CASNo_Ref = {{cascite|correct|CAS}}

| UNII_Ref = {{fdacite|correct|FDA}}

| UNII = NEH7L3Y1P1

| EINECS = 238-101-9

| PubChem = 61719

| ChemSpiderID = 55619

| SMILES = O=C2c1ccccc1C(c3c2c(NC(C)C)ccc3NC(C)C)=O

| InChI = 1/C20H22N2O2/c1-11(2)21-15-9-10-16(22-12(3)4)18-17(15)19(23)13-7-5-6-8-14(13)20(18)24/h5-12,21-22H,1-4H3

| InChIKey = BLFZMXOCPASACY-UHFFFAOYAP

| StdInChI = 1S/C20H22N2O2/c1-11(2)21-15-9-10-16(22-12(3)4)18-17(15)19(23)13-7-5-6-8-14(13)20(18)24/h5-12,21-22H,1-4H3

| StdInChIKey = BLFZMXOCPASACY-UHFFFAOYSA-N

| RTECS =

| MeSHName = C018468

}}

|Section2={{Chembox Properties

| C=20 | H=22 | N=2 | O=2

| Appearance =

| Density =

| MeltingPtC = 133-135

| BoilingPt =

| Solubility = insoluble

| SolubleOther = acetone, benzene, and toluene

}}

|Section3={{Chembox Hazards

| MainHazards =

| FlashPt =

| AutoignitionPt =

}}

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Oil Blue A is a blue anthraquinone dye{{Cite web |title=Oil Blue A - Royce Global |url=https://polymer-additives.specialchem.com/product/p-royce-global-oil-blue-a |access-date=2022-11-23 |website=polymer-additives.specialchem.com |language=en}} used for colouring certain plastics such as polystyrene and acrylic resins, as well as other materials such as petroleum and inks. It has good resistance to light.