Peri acid
- Product Name
- Peri acid
- CAS No.
- 82-75-7
- Chemical Name
- Peri acid
- Synonyms
- 8-AMINONAPHTHALENE-1-SULFONIC ACID;PERI ACID;1,8-AMINO ACID;Perigastric acid;Schollkopf's acid (VAN);8-SULFO-1-NAPHTHYLAMINE;1.8 Clevs Acid(Peri Acid);1-AMINO-8-SULFONAPHTHALENE;8-Naphthol-1-sulfonic acid;Peri acid ISO 9001：2015 REACH
- CBNumber
- CB0680336
- Molecular Formula
- C10H9NO3S
- Formula Weight
- 223.25
- MOL File
- 82-75-7.mol
Peri acid Property
- Melting point:
- >350°C
- Boiling point:
- 220°C (rough estimate)
- Density
- 1.3588 (rough estimate)
- refractive index
- 1.6500 (estimate)
- pka
- pK1: 5.03 (25°C)
- form
- powder to crystal
- color
- Light yellow to Brown
- Water Solubility
- 0.2g/L(21 ºC)
- Merck
- 14,6405
- BRN
- 983230
- CAS DataBase Reference
- 82-75-7(CAS DataBase Reference)
- EPA Substance Registry System
- 1-Naphthalenesulfonic acid, 8-amino- (82-75-7)
Safety
- Hazard Codes
- C
- Risk Statements
- 34
- Safety Statements
- 26-27-36-45
- TSCA
- Yes
- HS Code
- 29214500
Hazard and Precautionary Statements (GHS)
- Symbol(GHS)
-
- Signal word
- Warning
- Hazard statements
-
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
- Precautionary statements
-
P261Avoid breathing dust/fume/gas/mist/vapours/spray.
P264Wash hands thoroughly after handling.
P264Wash skin thouroughly after handling.
P280Wear protective gloves/protective clothing/eye protection/face protection.
P304+P340IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.
P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
P405Store locked up.
N-Bromosuccinimide Price
- Product number
- A0350
- Product name
- 8-Amino-1-naphthalenesulfonic Acid
- Purity
- >98.0%(HPLC)
- Packaging
- 25g
- Price
- $30
- Updated
- 2024/03/01
- Product number
- A0350
- Product name
- 8-Amino-1-naphthalenesulfonic Acid
- Purity
- >98.0%(HPLC)
- Packaging
- 100g
- Price
- $79
- Updated
- 2024/03/01
- Product number
- L17616
- Product name
- 8-Aminonaphthalene-1-sulfonic acid, 98%
- Packaging
- 100g
- Price
- $66.3
- Updated
- 2021/12/16
- Product number
- L17616
- Product name
- 8-Aminonaphthalene-1-sulfonic acid, 98%
- Packaging
- 25g
- Price
- $29.7
- Updated
- 2021/12/16
- Product number
- A0350
- Product name
- 8-Amino-1-naphthalenesulfonic Acid
- Purity
- >98.0%(HPLC)
- Packaging
- 500g
- Price
- $119
- Updated
- 2023/01/07
Peri acid Chemical Properties,Usage,Production
Chemical Properties
Dark green powder. 1-Aminonaphthalene-8-sulfonic acid [82- 75-7]. (8-aminonaphthalene-1-sulfonic acid), Peri acid, C10H9NO3S, Mr 223.24, crystallizes as the monohydrate and is sparingly soluble even in boiling water. The sodium salt is also sparingly soluble in water. Caustic fusion at 200℃ produces 8-amino-1- naphthol, whereas slow hydrolysis with 10 % sodium hydroxide at 220 – 260℃ yields 1,8- dihydroxynaphthalene. Sulfonation with cold 10 % oleum produces 1-aminonaphthalene-4,8- disulfonic acid, whereas hot concentrated sulfuric acid results in slow isomerization into naphthionic acid.
Uses
Intermediate of dyestuff. Dehydration with phosphorus oxychloride yields naphthosultam, and diazotization followed by hydrolysis results in naphthosultone, the intermediate for 1- hydroxynaphthalene-8-sulfonic acid. Diazotization followed by a Sandmeyer cyanide reaction gives 8-cyanonaphthalene-1-sulfonic acid, one of the most industrially important Sandmeyer reaction products because the nitrile forms the lactam, naphthostyril [130-00-7], upon treatment with concentrated alkali at 185℃. Hydrolysis of naphthostyril with dilute alkali yields 8-aminonaphthalene-1-carboxylic acid, which is the key intermediate for production of anthanthrone vat dyes via 1,10 -binaphthyl8,80 -dicarboxylic acid.
Production Methods
Naphthalene is converted to naphthalene-1-sulfonic acid. The crude sulfonation product is diluted with sulfuric acid, and 67.5 % nitric acid is added slowly at 30℃ to give the 5- and 8-nitro derivatives. The products are converted to the readily soluble magnesium salts by addition of a slurry of dolomite. The reaction mixture is neutralized with chalk and filtered hot. The filtrate is run into a suspension of iron powder in boiling water, which is kept slightly acidic with sulfuric acid. When reduction is complete, dissolved iron is precipitated by addition of magnesia, the iron residues are filtered off while hot, and the resulting liquor is acidified to pH 4.5 with sulfuric acid to give 99 % pure Peri acid in 48 % yield. The filtrates are further acidified to precipitate crude Laurent’s acid. This may be purified via its magnesium salt to give a 17 % yield of pure 1,5-isomer.
Peri acid Preparation Products And Raw materials
Raw materials
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View Lastest Price from Peri acid manufacturers
- Product
- Peri acid 82-75-7
- Price
- US $20.00/kg
- Min. Order
- 1kg
- Purity
- 99%
- Supply Ability
- 30 tons
- Release date
- 2023-04-11
- Product
- Peri acid 82-75-7
- Price
- US $30.00-12.00/kg
- Min. Order
- 1kg
- Purity
- 0.99
- Supply Ability
- 20 tons
- Release date
- 2023-10-25
- Product
- Peri acid 82-75-7
- Price
- US $0.00-0.00/KG
- Min. Order
- 1KG
- Purity
- 99%
- Supply Ability
- 500000kg
- Release date
- 2023-01-06