Pure sodium sulfide anhydrate is white cubic crystal or granule. It has strong hygroscopicity and is easily discolored and unstable in the air. The relative density is 1.856 (14℃) and the melting point is 1180℃. It is soluble in water (solubility is 15.4g/100ml water at 10℃, solubility is 57.2g/100ml water at 90℃), and the solution is alkaline. Slightly soluble in alcohol, insoluble in ether. Water solute is strongly alkaline, causing burns when it touches skin and hair, so it is also called Sulphur sulfide. Soluble in sulfur to form sodium polysulfide. Sodium sulfide is easily oxidized in the air to form sodium thiosulfate. Sodium sulfide deliquesces in the air and deteriorates by carbonation. Industrial sodium sulfide contains pink, brownish red, and khaki blocks due to impurities. Its specific gravity, melting point, and boiling point also vary depending on the influence of impurities.

Product name: Naphazoline hydrochloride/naphazoline hcl English alias: 1H-Imidazole, 4,5-dihydro-2- (1-naphthalenylmethyl) -, monohydrochloride; ; CAS Number: 550-99-2 Molecular Formula: C14H15ClN2 Molecular Weight: 246.73500 Exact Mass: 246.09200 PSA: 24.39000 LogP: 2.95040 Appearance and Properties: White crystalline powder Density: 1.15 g / cm3 Melting point: 254-260 ° C Boiling point: 440.5oC at 760 mmHg Flash point: 220.2oC Water solubility: 170 g / L (20 oC) Stability: Stable under normal temperatures and pressures. Storage conditions: Keep containers tightly closed. Store in a cool, dry area away from incompatible substances.

Excellent product quality and normal supply

Excellent product quality and normal supply

An organic sodium salt resulting from the formal condensation of Amido Black 10B (acid form) with two equivalents of sodium hydroxide.

An organic sodium salt having 3-[(4-anilinophenyl)diazenyl]benzene-1-sulfonate as the counterion. Used in one variant of Masson's trichrome to stain collagen yellow in contrast to the red muscle, but is not in common used. Metanil yellow is a yellow monoazoic dye. This color ing agent is used in leather and wood stains, and is also employed as a food dye in India.

Solvent Green 28 is bright green with good heat resistance and excellent light fastness.

EC NO: INCHI:InChI=1/C32H30N2O8S2.2Na/c1-15-13-17(3)31(43(37,38)39)19(5)27(15)33-23-11-12-24(26-25(23)29(35)21-9-7-8-10-22(21)30(26)36)34-28-16(2)14-18(4)32(20(28)6)44(40,41)42;;/h7-14,33-34H,1-6H3,(H,37,38,39)(H,40,41,42);;/q;2*+1/p-2 MF:C32H28N2Na2O8S2 MW:678.68 Synonyms: C.I. 61585;C.I. Acid Blue 80;Acid Blue 80;acid blue 80 (C.I. 61585);Acid Blue 80 (C.I.);sodium 3,3-(9,10-dioxoanthracene-1,4-diyldiimino)bis(2,4,6-trimethylbenzenesulphonate)

Bright yellow powder. A lemon yellow soluble in water, soluble in ethanol is lemon yellow, slightly soluble in acetone. Meet strong sulfuric acid is lemon yellow, dilute still is shown after lemon yellow. Its water solution meet strong hydrochloric acid is lemon yellow; Sodium hydroxide solution meet strong a lemon yellow. In dyeing of copper (a little red dark, encounter chromium ion unchanged, encounter iron ion turn green dark.

EC NO:224-546-6 MF:C28H20N2Na2O8S2 Synonyms:C.I. 61570;C.I. 61 570;C.I. 61 570 [Czech];C.I. Acid Green 25;C.I. Acid Green 25 disodium salt;Alizarin Cyanine Green F;Alizarin Cyanin Green G;Alizarin Cyanone Green B Extra;Acid Green 25;acid green 25 (C.I. 61570);Acid Green 25 (C.I.);disodium 2,2-(9,10-dioxoanthracene-1,4-diyldiimino)bis(5-methylsulphonate);disodium 2,2-(anthraquinone-1,4-diimino)bis(5-methylsulphonate);Alizarin cyanin green F