3486-30-4

3486-30-4 - Names and Identifiers

Name	Alphazurine A
Synonyms	acidblueo C.I. 42080 Acid blue 7 acidskyblueo AcidskyblueA Alphazurine A Acid Blue 7 Patent Blue A C.I. Acid Blue 7 acidturquoisebluea Acidturquoiseblue2G Acid Blue 7 (42080) abcolpatentblueaconc C.I. Acid Blue 7 (7CI) LABOTEST-BB LT00159685 AcidLakeBiueAErioGlaucineX C.I. Acid Blue 7, sodium salt C.I. Acid Blue 7, sodium salt (8CI) sodium 4-[(E)-{4-[benzyl(ethyl)amino]phenyl}{(4E)-4-[benzyl(ethyl)iminio]cyclohexa-2,5-dien-1-ylidene}methyl]benzene-1,3-disulfonate
CAS	3486-30-4
EINECS	222-476-0
InChI	InChI=1/C37H36N2O6S2.Na/c1-3-38(26-28-11-7-5-8-12-28)32-19-15-30(16-20-32)37(35-24-23-34(46(40,41)42)25-36(35)47(43,44)45)31-17-21-33(22-18-31)39(4-2)27-29-13-9-6-10-14-29;/h5-25H,3-4,26-27H2,1-2H3,(H-,40,41,42,43,44,45);/q;+1/p-1

3486-30-4 - Physico-chemical Properties

Molecular Formula	C37H37N2NaO6S2
Molar Mass	692.82
Density	1.371[at 20℃]
Melting Point	290°C (dec.)(lit.)
Water Solubility	134.8g/L at 20℃
Vapor Presure	0Pa at 25℃
Appearance	Crystalline Powder
Color	Dark purple
Storage Condition	Room Temprature
Stability	Stable. Incompatible with strong oxidizing agents.
MDL	MFCD00044440
Physical and Chemical Properties	Blue powder. Soluble in cold water and hot water, the aqueous solution is green blue, adding sodium hydroxide solution, boiling from blue to purple. Soluble in ethanol, blue. In concentrated sulfuric acid was purple, diluted into yellow. The color of copper and iron ions changed to green and dark, and it was not sensitive to chromium ions.
Use	For biocoloring. Can be combined with acid red B to make acid medium dark blue AGLO.

3486-30-4 - Risk and Safety

Safety Description	S24/25 - Avoid contact with skin and eyes.
WGK Germany	3
RTECS	DA4427950

3486-30-4 - Introduction

Easily soluble in cold water and hot water, blue, soluble in alcohol and blue. When it comes to concentrated sulfuric acid, it is olive-colored, diluted and yellow. The aqueous solution of this product plus sodium hydroxide changes from blue to purple when boiling. When dyeing, copper is encountered, and the color of iron ions becomes dark. Insensitive to dichromate.

Last Update：2022-10-16 17:24:48

3486-30-4 - Reference Information

LogP	-1.88 at 20℃
EPA chemical information	Information provided by: ofmpub.epa.gov (external link)
introduction	when acid lake blue a is dyed with copper, the color of iron ions becomes dark and green. Insensitive to dichromate. Performance advantages: pure color, good coloring rate, uniformity, bright color.
Preparation	Acidic lake blue A is made from benzaldehyde -2, 4-disulfonic acid and N-ethyl-N-benzylaniline After condensation, it is prepared by oxidation.
use	acid lake blue a is used to dye wool, silk and nylon in acid bath. acid turquoise blue 2G can be used for dyeing wool, silk and nylon and direct printing of wool and silk fabrics. Good levelness, bright color, but poor fastness, only 2 levels of sun fastness. It can be combined with acid light yellow 2G to dye bright fruit green and emerald green, and can also be combined with navy blue, red and other dyes to increase the brightness of dyeing. It can also be used for coloring leather, paper, cosmetics, soap, biological products, and making lake pigments. Used for dyeing wool, silk and nylon fabrics. It can also be printed directly on wool and silk fabrics. It can also be used for leather, paper, cosmetics, soap and rubber coloring, and can also be used for biological coloring. Can be combined with acid red B to make acid medium dark blue AGLO. It is mainly used for dyeing wool, silk and nylon fabrics and printing wool and silk fabrics. It can also be used for coloring paper, cosmetics, soap, leather, etc.
production method	benzaldehyde -2,-4-bissulfonic acid is condensed with N-ethyl-N-benzylaniline. Salting out to obtain benzaldehyde -2,4-bissulfonic acid 190 sodium carbonate (98%) 181N-ethyl-N-benzylaniline 320 glacial acetic acid (98%) 192 oxalic acid 121 refined salt 1296 sulfuric acid (100%) 443 product specifications: Tianjin Q/HG 2-557-78. 2, 4-bissulfonic acid benzaldehyde and N-ethyl-N-benzylaniline are used as raw materials, and the two are first condensed, the product is obtained by oxidation. The finished product is salted out and dried.. 54kg 2,4-bisulfonic acid benzaldehyde (100%) is dissolved in 81kg of sulfuric acid (100%), when heated to 45-50 ℃, 91.8kg N-ethyl-N-benzylaniline (100%) is added, the temperature is raised to 100-103 ℃, the condensation reaction is maintained for 72h, the filter cake is purified with sulfuric acid and hydrochloric acid, and the purified condensation product is melted with sodium carbonate alkali, add 2.475-2.625kg potassium dichromate (100%), 1.29kg sulfuric acid, 5.4kg acetic acid and 3.6kg oxalic acid, oxidize at 100 ℃ for 1h, salting out, filtering and drying to obtain the finished product. There is a manganese dioxide oxidation process abroad. The operation is as follows: add 40mL of 1mol/L sodium hydroxide solution to the suspension formed by 12.5g of leuco and 400mL of water, add 400mL of water, raise the temperature to 85-95 ℃, add 2.1g of manganese dioxide and 20g of water, add 4g of acetic acid and 5.25g of 8% phosphoric acid mixture under stirring, stir at 85-95 ℃ for 15min, and filter. The filtrate was salted out with 6%-7% sodium chloride, filtered and dried at 100-105 ℃ to obtain 15g (Pol. 126654).
category	toxic substances
toxicity classification	poisoning
acute toxicity	abdominal cavity-mouse LD50: 437 mg/kg
flammability hazard characteristics	flammability; heating decomposition releases toxic nitrogen oxides, sodium oxide and sulfur oxide smoke
storage and transportation characteristics	warehouse ventilation and low temperature drying
fire extinguishing agent	dry powder, foam, sand, carbon dioxide, mist water