WeakdeepblueGR
ACID BLUE 120
CAS: 3529-01-9
Molecular Formula: C33H23N5Na2O6S2
WeakdeepblueGR - Names and Identifiers
WeakdeepblueGR - Physico-chemical Properties
| Molecular Formula | C33H23N5Na2O6S2 |
| Molar Mass | 695.68 |
| Storage Condition | Room Temprature |
| Physical and Chemical Properties | Chemical properties dark purple brown powder. Soluble in water, the aqueous solution is purple, adding hydrochloric acid to produce a dark blue precipitate; adding concentrated sodium hydroxide solution is red. It is dark blue when dissolved in ethanol. It is dark blue in concentrated sulfuric acid, and green blue after dilution. When dyeing, the color light of copper and iron ions is slightly darker, and the influence of chromium ions is very small. |
| Use | Uses weak acid deep blue GR is mainly used for dyeing wool, silk, nylon, and can also be used with direct dyes in the same bath dyeing wool/viscose blended fabrics, also used for leather, paper, biological products coloring. |
WeakdeepblueGR - Risk and Safety
| WGK Germany | 3 |
WeakdeepblueGR - Upstream Downstream Industry
WeakdeepblueGR - Nature
| EPA chemical information | 1-Naphthalenesulfonic acid, 8-[(4-methylphenyl)amino]-5-[[4-[(3-sulfophenyl)azo]-1-naphthalenyl]azo]-, disodium salt (3529-01-9) |
Last Update：2024-04-10 22:29:15
WeakdeepblueGR - Production method
using m-aminobenzene sulfonic acid, 1-naphthylamine and N-p-tolyl periacid (N-p-tolyl peri acid) as raw materials, m-aminobenzene sulfonic acid is first diazotized, coupled with 1-naphthylamine, then diazotized the coupling product, and coupled with N-p-tolyl periacid to obtain the product. The finished product is salted out, filtered, dried and crushed..
Add 0.05mol of m-aminobenzenesulfonic acid, 0.0403mol of sulfuric acid and 100mL of water into the reactor, mix evenly, cool to 8-10 ℃, add 0.05mol of sodium nitrite within 10-15min, continue to stir for 30-40min after adding, and complete the diazotization reaction.
Mix 0.05175mol of 1-naphthylamine, 0.05255mol of hydrochloric acid and 104mL of water into suspension, heat to 70-80 ℃ to dissolve 1-naphthylamine (it must be maintained at about 50 ℃), add the above solution to diazonium solution within 30min, and maintain the coupling temperature at 15-18 ℃. After adding, continue stirring for 10min. When coupling, 20% sodium hydroxide solution should be added to maintain the pH value of the reaction solution at about 3.5. At the end of the reaction, 20% sodium hydroxide solution was added to make the pH value reach 8-8.5, and fully stirred for 20min. About 70g of salt was added to salt out to obtain monoazo dye suspension.
The suspension was cooled to 5 ℃, 0.0145mol of sodium nitrite was added, and then 0.1651mol of sulfuric acid and 20g of ice were added, then 0.0435mol of sodium nitrite was added within 15min, the temperature was kept at 5-10 ℃, stirred for 5h, filtered, and the filter cake was mixed with 130g of ice water to form a suspension.
Add 0.045mol of p-tolyl periacid and 150mL of water to the reactor, stir well, then add appropriate amount of sodium carbonate, heat to 40-50 ℃ to dissolve it, then add 200mL of water to dilute it, add trace acetic acid to make it weakly acidic, add 8.5g of sodium acetate, add the above diazonium suspension when the temperature is reduced to 13-15 ℃, add it within 5min, and continue stirring for 2-3. Let it sit overnight. Then neutralize with sodium hydroxide to weakly alkaline, heat to 60-70 ℃, add salt to salt, cool, filter, wash, dry, and crush the product.
Last Update：2024-04-10 22:29:15
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CAS: 3529-01-9
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Product Name: ACID BLUE 120 Visit Supplier Webpage Request for quotation
CAS: 3529-01-9
Tel: 18301782025
Email: 3008007409@qq.com
Mobile: 18021002903
QQ: 3008007409
Wechat: 18301782025
CAS: 3529-01-9
Tel: 18301782025
Email: 3008007409@qq.com
Mobile: 18021002903
QQ: 3008007409
Wechat: 18301782025
View History
Raw Materials for WeakdeepblueGR
Sodium chloride
ACID BLUE 113
2-AMINONAPHTHALENE HYDROCHLORIDE
8-p-toluidinonaphthalene-1-sulphonic acid
Metanilic acid
1-Naphthylamine
ACID BLUE 113
2-AMINONAPHTHALENE HYDROCHLORIDE
8-p-toluidinonaphthalene-1-sulphonic acid
Metanilic acid
1-Naphthylamine