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Acid Orange 7

Acid Orange 7 structure

CAS No:
633-96-5
Formula:
C16H12N2O4S.Na
Chemical Name:
Acid Orange 7
Synonyms:
Benzenesulfonic acid,4-[2-(2-hydroxy-1-naphthalenyl)diazenyl]-,sodium salt (1:1);Acid Orange A;C.I. Acid Orange 7,monosodium salt;Acid Orange;Benzenesulfonic acid,4-[(2-hydroxy-1-naphthalenyl)azo]-,monosodium salt;Benzenesulfonic acid,p-(2-hydroxy-1-naphthylazo)-,sodium salt;C.I. 15510;Acid Leather Orange extra;Acid Leather Orange PRW;Acid Orange II;Acilan Orange II;Airedale Orange II;Amacid Orange Y;Atul Acid Orange II;Betanaphthol orange;Brasilan Orange A;Bucacid Orange A;Calcocid Orange Y;Certiqual Orange II;Colacid Orange;Curol Orange;Diacid Orange II;Erio Orange II;Fenazo Orange;Hidacid Orange II;Hispacid Orange AF;p-(2-Hydroxy-1-naphthylazo)benzenesulfonic acid sodium salt;Java Orange II;Kiton Orange II;Kromon Lake Orange Toner;Lake Orange A;Lake Orange II YS;Leather Orange Extra;Lurazol Orange E;Lutetia Orange 3JR;Mandarin G;Naphthalene Lake Orange G;Naphthalene Orange G;2-Naphthol Orange II;β-Naphthyl orange;Naphtocard Orange II;Neklacid Orange II;No. 177 Orange Lake;Orange Y;11550 Orange;Orange Extra N;Orange Extra P;Orange IIC;Orange II for Lakes;Orange IIP;Orange IIS;Orange IISM;Orange II Special For Lacquer;Orange Toner GRT;Orange YA;Orange YZ;Peeracid Orange II;Persian Orange;Persian Orange X;Persian Orange Lake;Pure Orange II S;Sanyo Gum Orange A;Solar Orange;Special Orange H;Special Orange GR;Symuler Orange Lake 43;Symulon Acid Orange II;Takaoka Acid Orange II;75025-97-7;84842-86-4;161628-32-6
Categories:
Cosmetic Ingredient > Cosmetic Colorant

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Description

Orange-red powder

Acid Orange 7 Basic Attributes

Molecular Weight：

350.32

Exact Mass：

350.033722

EC Number：

211-199-0

UNII：

Q1LIY3BO0U

DSSTox ID：

DTXSID0038881

HScode：

3204120000

Characteristics

PSA：

110.53000

XLogP3：

4.94570

Appearance：

Green to blue Crystalline Powder

Melting Point：

164°C

Water Solubility：

H2O: 116 g/L (30 ºC);Solubility Very soluble in water; very slightly soluble in ethanol

Storage Conditions：

Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.

Safety Information

Transport codes：

NONH for all modes of transport

wgk germany：

hazard class code：

36/37/38

safety instructions：

26-36-37/39

RTECS Number：

DB7084000

Marks：

Stability/Shelf Life：

Stable under normal temperatures and pressures.

Precautionary statement(s)：

P261-P305 + P351 + P338

Hazard Statements：

H315-H319-H335

GHS Classification：

Not Classified

Drug Information

MeSH：

Chemicals and substances that impart color including soluble dyes and insoluble pigments. They are used in INKS; PAINTS; and as INDICATORS AND REAGENTS. (See all compounds classified as Coloring Agents.)

MeSH Entry Terms：

2-naphthol orange

Acid Orange 7 Use and Manufacturing

Methods of Manufacturing

Using p-aminobenzenesulfonic acid and 2-naphthol as raw materials, diazotizing p-aminobenzenesulfonic acid and coupling with 2-naphthol to obtain the product. The finished product is obtained by salting out, filtering, drying and crushing. . First, mix 15% p-aminobenzene sulfonic acid solution (containing 173kg p-aminobenzene sulfonic acid) and 30% sodium nitrite solution (containing NaNO2 69kg) uniformly, add 600L water and 264kg hydrochloric acid (30%) into the diazonium pot, Add ice to control the temperature to 10-15°C, add the above mixed solution within 10 minutes, continue to stir for 30 minutes, to obtain the diazonium liquid. Add 400L of water, 141.8kg of 2-naphthol and 143kg of 30% liquid caustic soda into the coupling pot, heat to 45-50℃, stir to dissolve, and cool to 8℃, add 19kg of salt, and quickly add 1/2 amount of diazonium liquid . Then add 37 kg of table salt, and add another 1/2 volume of diazonium solution within 1 h, continue to stir for 1 h, add 75 kg of salt, and continue stirring to the end of the coupling. Filter and dry to obtain the product.

Uses

Mainly used for dyeing silk and wool fabrics, but also for dyeing leather and paper. Nylon can be dyed in formic acid bath. This product can be directly printed on wool, silk and nylon, and can also be used as indicator agent and biological coloring. Acid-base indicator, pH change range 7.4 (amber) ~ 8.6 (orange); 10.2 (orange) ~ 11.8 (red); extraction and photometric determination of cationic surfactants; biological stains

Manufacturing Info：

Benzenesulfonic acid, 4-[2-(2-hydroxy-1-naphthalenyl)diazenyl]-, sodium salt (1:1): ACTIVE

Use Classification：

Cosmetics -> Cosmetic colorant; Hair dyeing

Computed Properties

Molecular Weight:350.3
Hydrogen Bond Donor Count:1
Hydrogen Bond Acceptor Count:6
Rotatable Bond Count:3
Exact Mass:350.03372229
Monoisotopic Mass:350.03372229
Topological Polar Surface Area:111
Heavy Atom Count:24
Complexity:529
Covalently-Bonded Unit Count:2
Compound Is Canonicalized:Yes

Material

2-Methoxyethanol

2-Naphthol

SODIUM SULFATE

Sodium chloride

Sodium sulfate

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Guide of Acid Orange 7

Description
Basic Attributes
Characteristics
Safety Information
Drug Information
Use and Manufacturing
Computed Properties
Material
Recommended Suppliers
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Acid Orange 7

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