High Quality Fabric Dye Powder Direct Red 227

Direct Red 227, also named Direct Rose FR, Direct Red D-7B, CAS No.12222-51-4. It is a triazine-modified disazo water-soluble direct dye, appearing as uniform purplish-red powder and producing bright bluish red shade on cotton and viscose fabrics.

It dissolves rapidly in cold and hot water, achieves optimal exhaustion under neutral to weakly acidic dye baths, and high dye uptake can be reached with small dosage of Glauber’s salt. Stable at 130℃ without agglomeration, suitable for one-bath high-temperature dyeing of polyester/cotton and polyester/viscose blends. It is also applied for printing of cotton & rayon, paper pulp coloring and water-based leather tinting.

It has light fastness Grade 4–5 and excellent washing fastness, while wet rubbing and water fastness are moderate. Cationic fixing agent is recommended for dark shades to improve wet fastness.

● Molecular Formula: C60​H46​N16​Na6​O22​S6​

● Molecular Weight: 1673.43

● Chemical Structure: Disazo, triazine modified direct dye

1.Light fastness: Grade 4–5

2.Washing fastness (colour change): Grade 4–5; washing fastness (staining): Grade 4

3.Water fastness (colour change): Grade 4; water fastness (staining): Grade 2–3

4.Dry rubbing fastness: Grade 4; wet rubbing fastness: Grade 2–3

5.Acid resistance: Grade 5; alkali resistance: Grade 2–3

1.Textile Industry

Dyeing and printing of cotton, viscose and rayon; one-bath dyeing for polyester/cotton, polyester/viscose blends (stable at 130 ℃ together with disperse dyes without agglomeration); suitable for deep shade blending of cellulosic fibres.

2.Paper Industry

Internal dyeing of wood pulp and waste paper pulp, colouring of toilet paper and wrapping paper with high uptake rate.

3.Others: Leather dyeing, formulation of water-based inks.

● Dyeing medium: Neutral to weakly acidic condition facilitates exhaustion

● Exhaustion agent: Moderate dosage of Glauber’s salt achieves high dye uptake

● Disadvantage: Average wet fastness. Finished dark shade fabrics are suggested to be treated with fixing agent to enhance washing fastness.

Standard package: 25kg woven bag / fibre drum. Store hermetically, keep dry. Do not store together with strong oxidants.