Name | HYDROXYLAMINE PHOSPHATE |
Synonyms | HAP RRB2 Hydroxyamine phosphate HYDROXYLAMINE PHOSPHATE HYDROXYLAMMONIUM PHOSPHATE |
CAS | 20845-01-6 |
EINECS | 244-077-0 |
Molecular Formula | H12N3O7P |
Molar Mass | 197.08 |
Melting Point | 169-171°C(lit.) |
Appearance | frozen liquid |
Color | clear colorless |
Storage Condition | -70°C |
Stability | Stable. Incompatible with bases, oxidizing agents. |
Use | Hydroxylamine is a raw material for the preparation of cyclohexanone oxime. Pure hydroxylamine is characterized by structural instability, spontaneous decomposition upon heating and possible explosion. Therefore, hydroxylamine is generally in the form of hydroxylamine sulfate, salt chemical book acid hydroxylamine or hydroxylamine phosphate, hydroxylamine phosphate is the main form of hydroxylamine, mainly in phosphoric acid as buffer solution, nitrate, hydrogen as a raw material to produce. |
Risk Codes | R22 - Harmful if swallowed R34 - Causes burns R43 - May cause sensitization by skin contact R48/22 - Harmful danger of serious damage to health by prolonged exposure if swallowed. R50 - Very Toxic to aquatic organisms |
Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S61 - Avoid release to the environment. Refer to special instructions / safety data sheets. |
UN IDs | UN 3262 8/PG 2 |
WGK Germany | 3 |
FLUKA BRAND F CODES | 21 |
Abstract:
In this paper, based on the production status of butanone oxime by hydroxylamine phosphate, the mathematical calculation software Matlab and the process simulation software Aspen Plus are used the reaction extraction process and refining process in the production process were simulated and optimized. The basis of process calculation is obtained by material balance calculation of production data, and important process parameters are obtained by experimental determination and empirical formula calculation, in order to get the reasonable simulation results to guide MEKO's production expansion and optimization operation. First, on the basis of the production data... view all
Key words:
butanone oxime reaction extraction procedure hydroxylamine phosphate method production process
degree level:
MSc
cited:
CN201611088742.X
application date:
2016-12-01
Public/Announcement Number:
CN106732557A
Public/announcement date:
2017.05.31
applicant (patent):
Xi'an Kaili New Materials Co., Ltd.
inventor:
Zhang Lei , Zeng Lihui , Wang Zhao-wen , Gao Wu , mw Li Yuefeng , Li Xiaohu , Zeng Yongkang , Zhang Zhixiang
National and provincial code:
CN610102
Abstract:
The invention provides a preparation method of a noble metal catalyst for synthesizing hydroxylamine phosphate by HPO method, the catalyst is composed of activated carbon and active components supported on activated carbon, the active component is Pd and Pt, and the preparation method of the catalyst comprises the following steps: 1. Preparing a palladium-carbon catalyst; 2. Preparing a platinum-carbon catalyst; 3. Mechanically mixing the Palladium-carbon catalyst and the platinum-carbon catalyst uniformly, noble metal catalysts for HPO synthesis of hydroxylamine phosphate were obtained. The present invention is based on the various deficiencies of the present hydroxylamine preparation catalyst, especially for the complex preparation process of palladium-Platinum/carbon and the high impregnation temperature, the preparation process requires repeated heating and cooling and other deficiencies. The new process method is simple in preparation process, and the pretreated Activated carbon can be impregnated without drying or roasting treatment, impregnation and reduction were carried out at room temperature. The Palladium-Platinum/carbon catalyst was prepared by mechanical mixing, and the catalyst showed high activity.
Abstract:
The Reason of hydroxylamine phosphate decomposition in inorganic process liquid circulation was discussed. The effects of temperature, Pt/Pd/C catalyst, NOx and H concentration on the decomposition of hydroxylamine phosphate were studied. And take targeted measures, and achieved good results.
Key words:
hydroxylamine phosphate process caprolactam hydroxylamine decomposition
DOI:
10.3969/j.issn.1006-7906.2004.05.005
cited:
year:
2004
Overview | Hydroxylamine is the raw material for the preparation of cyclohexanone oxime. The characteristic of pure hydroxylamine is that the structure is unstable, it will spontaneously decompose when heated and may cause explosion. Therefore, hydroxylamine generally exists in the form of hydroxylamine sulfate, hydroxylamine hydrochloride or hydroxylamine phosphate. Hydroxylamine phosphate is the main form of hydroxylamine at present. It is mainly made with phosphoric acid as a buffer solution and nitrate and hydrogen as raw materials. |
Application example | The main process of producing caprolactam by hydroxylamine phosphate oxime is hydrogenation of benzene to produce cyclohexane, oxidation of cyclohexane to produce cyclohexanone, cyclohexanone reacts with hydroxylamine phosphate solution to produce cyclohexanone oxime, cyclohexanone oxime reproduces Beckman to produce caprolactam, the core part of this patented technology is that the production process of cyclohexanone oxime adopts the phosphoric hydroxylation method (commonly referred to as HPO patented technology). The main advantage of this process is that it does not produce by-product ammonium sulfate in the oxime reaction, and the generated cyclohexanone oxime is of good quality. Compared with other caprolactam manufacturing processes, the quality of caprolactam has also been improved, which is at the current world advanced level. |
preparation | before feeding the inorganic liquid in the hydroxylamine reactor, continuously add 30-99% (w eight percent) nitric acid (where the nitrous acid content is less than 0.3% w eight percent, and the burning residue content is less than 0.4% w eight percent) to make the inorganic liquid feed in the hydroxylamine reactor 80 m3/h, inorganic liquid feed hydrogen ion (H) concentration is 2.65mol/kg, hydroxylamine ion (NH3OH) concentration is 0.06mol/kg, free nitric acid concentration is 0.66mol/kg, when the reaction temperature is 60 ℃, pressure is 2450KPa (gauge pressure), hydrogen concentration is 32.07% (volume percentage), in platinum/palladium/carbon (Pt/Pd/C, under the action of catalyst containing Pt8% and Pd2%, activated carbon as carrier and produced by JM Company in the United States, the concentration of inorganic liquid hydrogen ion (H) and hydroxylamine ion (NH3OH) in the hydroxylamine reactor are 0.40mol/kg and 0.89mol/kg (hydroxylamine phosphate is produced to 0.83mol/kg). |