The manufacturer takes you to know what is hydroxyamine hydrochloride

Hydroxylamine hydrochloride is a kind of inorganic substance. It is a colorless crystalline, deliquable, white chemical substance. It is mainly used as reducing agent and developing agent.

Storage method

1. It should be stored in a cool, ventilated and dry warehouse.

2. This product is made of inner lined plastic bag, middle lined paper bag, outer woven polyethylene bag, and then packed with wooden or paper bucket, each bag is 25kg. This product is easy to absorb moisture, and can be deeply decomposed when heated, so it needs to be sealed and stored in a dry place, moisture-proof and heat-proof. Store and transport in accordance with regulations on toxic substances.

Synthesis method

1. Sodium nitrite synthesis method (oxime method) add water to the reactor, stir to add sodium nitrite, add sodium metabisulfite in batches, and then acidize with sulfuric acid. The acidified material was sent to a hydrolytic kettle, acetone was added, and then neutralized with liquid alkali. The neutralized liquid was distilled to obtain acetone oxime. Acetone oxime and hydrochloric acid were added into a salt kettle to produce hydroxylamine hydrochloride and acetone. Acetone recovery and use; Hydroxyamine hydrochloride was concentrated, cooled and crystallized, centrifuged and dried to obtain the finished product. Raw material consumption quota: sodium nitrite (95%) 1970kg/t, sodium metabisulfite (64% SO2) 5418kg/t, acetone (98%) 1175kg/t. 2. Nitromethane method Nitromethane reacts with hydrochloric acid and water to produce hydroxylamine hydrochloride. According to HGB3044-76, hydroxyamine hydrochloride products are white crystal, the content of second grade product is more than 98.5, the content of third grade product is more than 97%. Raw material consumption quota: nitromethane 1200kg/t, hydrochloric acid (30%) 1500kg/t.

2. Or by nitromethane and hydrochloric acid, water to prepare hydroxylamine hydrochloride.

3 sodium nitrite dissolved in water, cooling to 0℃, add sodium bisulfite and 35% ~ 40% dilute sulfuric acid to make the solution pH=2, add acetone temperature rise to 35℃, stop stirring, temperature rise to 70℃ insulation for 3h, cooling to 30℃, add sodium hydroxide solution to pH 7 ~ 8. The acetone oxime was steamed by heating and hydrochloric acid was added. The temperature was maintained at 55 ~ 60℃ for 12h, and then the concentration was carried out. After slightly cold decolorization, filtration, concentration, cooling, crystallization, then the finished product. Refining can be done by ethanol soaking or water recrystallization.

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