OEM Customized 3-hydroxynaphthalene-2-carboxylate - High Quality 99% 2-Aminonaphthalene-1-sulfonic acid 2-Amino-1-naphthalenesulfonic acid 81-16-3 WhatsApp:+86-15705216150 – Mit-ivy
OEM Customized 3-hydroxynaphthalene-2-carboxylate - 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:
Related Product Guide:
CAS No. [95-68-1] Production process. 2,4-Dimethylaniline
List of flammable and explosive chemical reagents commonly used in laboratories
Persisting in "High quality, Prompt Delivery, Aggressive Price", now we have established long-term cooperation with consumers from equally overseas and domestically and get new and old clients' large comments for OEM Customized 3-hydroxynaphthalene-2-carboxylate - 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: Juventus, Afghanistan, Stuttgart, Our solutions are produced with the best raw materials. Every moment, we constantly improve the production programme. In order to ensure better quality and service, we now have been focusing on the production process. We have got high praise by partner. We are looking forward to establishing business relationship with you.
By Geraldine from Kuala Lumpur - 2018.11.11 19:52
Product quality is good, quality assurance system is complete, every link can inquire and solve the problem timely!
By Pamela from Kenya - 2017.02.28 14:19