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professional factory for CAS: 14426-28-9 - MIT -IVY Manufacturers make competitive prices J acid Dye Intermediate J acid 2-amino-5-naphthol-7-sulfonic acid CAS:87-02-5 WhatsApp:+86-15705216150 – Mit-ivy

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professional factory for CAS: 14426-28-9 - MIT -IVY Manufacturers make competitive prices J acid Dye Intermediate J acid 2-amino-5-naphthol-7-sulfonic acid CAS:87-02-5 WhatsApp:+86-15705216150 – Mit-ivy Detail:

J acid Typical Properties

Items Specifications
Content ≥90%
Gamma Acid ≤0.15%
Insoluble ≤0.20%

 

Items Specification
Appearance Grey to light brown powder
Content (dry) ≥90.0%
Purity (HPLC) ≥97.0%
Gamma Acid content ≤1.50%
Bis J Acid content ≤0.20%
Water ≤1.0%
2-Naphthylamine ≤100ppm

 

 

Used to be made from β-naphthylamine. Because of the strong carcinogenicity of β-naphthylamine, this production method has been eliminated, and now 2-naphthylamine-1-sulfonic acid is used as raw material to produce J acid. After sulfonation and hydrolysis, 2-naphthalic acid-5-dimethyl 7-disulfonate monosodium salt (amino J acid) was obtained, which was then neutralized, fused by alkali and acidified. J acid was obtained by sulfonation with fuming sulfuric acid, hydrolysis, absorption, washing, alkali solution and acidizing washing. The sodium salt dissolves in water and shows blue fluorescence. It is co-heated with ferric trichloride solution to form brown-black precipitation.

Chemical property

1. J acid co-heated with ferric chloride solution to form dark brown precipitate; calcium chloride to form yellowish brown precipitate; base sodium salt dissolved in water showed blue fluorescence.

2. Avoid inhaling dust from this product and avoid contact with eyes and skin.

3. poisonous. Rats were given oral LD50:11500mg/kg. Toxic or strongly corrosive raw materials such as 2-aminonaphthalene sulfonic acid, fuming concentrated sulfuric acid and caustic soda are used in production.

Applications

Dye intermediates. It is mainly used to prepare direct green lotus R, direct fast blue FRL, direct fast ash 2BL, direct copper salt blue 2R, direct acid resistant purple, direct pink, direct copper dye navy, fast blue B2R, direct jujube GB, as well as reactive scarlet, orange, brilliant orange X-GN, gray, grass green, red brown and other dyes. It is also used to prepare double J acid, scarlet acid and phenyl J acid.

storage and packing

Packaging Details:25kg/bag

It should be sealed and protected from light. Store in a dry, clean house to prevent exposure to sunlight and rain. When placed, the mouth of the box (drum) should be upward to avoid leakage of the product.

others name:J acid;2-amino-5-naphthol-7-sulfonic acid; 6-amino-1-naphthol-3-sulfonic acid


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We insist on the principle of development of 'High quality, Efficiency, Sincerity and Down-to-earth working approach' to provide you with excellent service of processing for professional factory for CAS: 14426-28-9 - MIT -IVY Manufacturers make competitive prices J acid Dye Intermediate J acid 2-amino-5-naphthol-7-sulfonic acid CAS:87-02-5 WhatsApp:+86-15705216150 – Mit-ivy , The product will supply to all over the world, such as: United Arab emirates, Italy, Berlin, For more than ten years experience in this filed, our company has gained high reputation from home and abroad. So we welcome friends from all over the world to come and contact us, not only for business, but also for friendship.
Customer service staff and sales man are very patience and they all good at English, product's arrival is also very timely, a good supplier.
5 Stars By Lee from Muscat - 2018.12.30 10:21
After the signing of the contract, we received satisfactory goods in a short term, this is a commendable manufacturer.
5 Stars By Monica from Belize - 2018.11.22 12:28
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