Manufacturer of P-TOLYLAMINE - High Quality 99% 2-Aminonaphthalene-1-sulfonic acid 2-Amino-1-naphthalenesulfonic acid 81-16-3 WhatsApp:+86-15705216150 – Mit-ivy
Manufacturer of P-TOLYLAMINE - High Quality 99% 2-Aminonaphthalene-1-sulfonic acid 2-Amino-1-naphthalenesulfonic acid 81-16-3 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
Product detail pictures:
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That has a positive and progressive attitude to customer's interest, our organization consistently improves our products quality to satisfy the demands of shoppers and further focuses on safety, reliability, environmental specifications, and innovation of Manufacturer of P-TOLYLAMINE - High Quality 99% 2-Aminonaphthalene-1-sulfonic acid 2-Amino-1-naphthalenesulfonic acid 81-16-3 WhatsApp:+86-15705216150 – Mit-ivy , The product will supply to all over the world, such as: United States, Czech Republic, Peru, Our staffs are rich in experience and trained strictly, with qualified knowledge, with energy and always respect their customers as the No. 1, and promise to do their best to deliver the effective and individual service for customers. The Company pays attention to maintaining and developing the long-term cooperation relationship with the customers. We promise, as your ideal partner, we'll develop a bright future and enjoy the satisfying fruit together with you, with persisting zeal, endless energy and forward spirit.
By Victor from Hongkong - 2017.05.02 11:33
The product manager is a very hot and professional person, we have a pleasant conversation, and finally we reached a consensus agreement.
By Dawn from Czech Republic - 2017.03.28 16:34