GB/T 4469-1984
Test method for the reduction speed of vat dyes--Steam process

Be replaced

Standard No.

GB/T 4469-1984

Language

Chinese

Release Date

1984

Published By

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China

Replace By

GB/T 4469-2006

Lastest

GB/T 4469-2006

Scope

This standard applies to the determination of the steam reduction rate of vat dyes (ultrafine powder) in the suspension pad dyeing process. Pad dyeing, intermediate drying, steaming, oxidation, soaping, and water washing in the test simulate industrial production. Under specific conditions, calculate the time when the color yield of the sample is basically normal, and express it in seconds.

GB/T 4469-1984 history

• 2006 GB/T 4469-2006 Vat dyes.Determination of the reduction speed.Steam process
• 1984 GB/T 4469-1984 Test method for the reduction speed of vat dyes--Steam process