CN107777667A - A kind of preparation method of guaranteed reagent hydrobromic acid - Google Patents
A kind of preparation method of guaranteed reagent hydrobromic acid Download PDFInfo
- Publication number
- CN107777667A CN107777667A CN201610782410.5A CN201610782410A CN107777667A CN 107777667 A CN107777667 A CN 107777667A CN 201610782410 A CN201610782410 A CN 201610782410A CN 107777667 A CN107777667 A CN 107777667A
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- CN
- China
- Prior art keywords
- hydrobromic acid
- preparation
- guaranteed reagent
- industrial
- reagent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B7/00—Halogens; Halogen acids
- C01B7/09—Bromine; Hydrogen bromide
- C01B7/093—Hydrogen bromide
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention provides a kind of preparation method of guaranteed reagent hydrobromic acid, comprise the following steps that：It is separately added into industrial hydrobromic acid and adds stannous oxide and barium hydroxide, air-distillation, is collected 124-127 DEG C of cut, produce；Methods described is workable, and the reaction time is short, and new thinking is provided to prepare guaranteed reagent hydrobromic acid, is adapted to the needs of scale industrial production.
Description
Technical field
The present invention relates to a kind of preparation method of chemical reagent, especially a kind of preparation side of guaranteed reagent hydrobromic acid
Method.
Background technology
Hydrobromic acid is the aqueous solution of bromination hydrogen.Irritant tart flavour.Micro- smoke.See light, dew be empty gas or long storage by
Gradual change Huang Cheng's brown.There is strong reducing property.Generation bromomethane can be acted on methyl, bromide is generated with alkali, hydrobromic acid is generated with amine
Salt.Can be miscible with water and ethanol.Relative density 1.49 (47%), 1.38 (40%).- 87 DEG C of fusing point (anhydrous).- 67 DEG C of boiling point
(anhydrous), 126 DEG C (47.5%).Index of refraction (n20D) 1.438.Low toxicity, LC50 (rat, suction) 2.858G/L/
1h.There is very aggressive.
The preparation method of hydrobromic acid mainly divides red phosphorus method and absorption process.Wherein, red phosphorus method be red phosphorus is put into be filled with water it is anti-
Answer in device, be added slowly with stirring bromine, it is reacted and is obtained with red phosphorus.Absorption process is to utilize syntomycin or production of chloramphenicol
During bromination hydrogen caused by bromination p-nitroacetophenone, with water absorb and obtain.But products obtained therefrom purity is often relatively low,
The requirement of guaranteed reagent is not met.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of preparation method of guaranteed reagent hydrobromic acid.
In order to solve the above technical problems, the technical scheme is that：
A kind of preparation method of guaranteed reagent hydrobromic acid, is comprised the following steps that：Addition is separately added into industrial hydrobromic acid
Stannous oxide and barium hydroxide, air-distillation, 124-127 DEG C of cut is collected, is produced.
Preferably, the preparation method of above-mentioned guaranteed reagent hydrobromic acid, the industrial hydrobromic acid concentration are 40%.
Preferably, the preparation method of above-mentioned guaranteed reagent hydrobromic acid, the industrial hydrobromic acid and stannous oxide, hydroxide
The volume mass ratio of barium is calculated as 5000 by ml/g/g：15：1.
The beneficial effects of the invention are as follows：
The preparation method of above-mentioned guaranteed reagent hydrobromic acid, workable, the reaction time is short, to prepare guaranteed reagent
Hydrobromic acid provides new thinking, is adapted to the needs of scale industrial production.
Embodiment
Technical scheme of the present invention is further described with reference to specific embodiment.
Embodiment 1
A kind of preparation method of guaranteed reagent hydrobromic acid (SP/4N), specific preparation process are as follows：
In 10000ml distilling flasks, industrial hydrobromic acid (40%) 5000ml is added, adds stannous oxide 15g, barium hydroxide
1g, air-distillation, 124-127 DEG C of cut is collected, is produced, yield about 85%.
Method main points：Stannous oxide is added in distillation system, ensures product colourity；Barium hydroxide is added, removes industry production
Sulfate in product.
Detection method：GB/T 621-2015, testing result are shown in Table 1.
Table 1
| Content (HBr), % >= | 43.0 |
| Colourity, black Zeng Danwei≤ | 20 |
| Ignition residue (in terms of sulfate), %≤ | 0.005 |
| Chloride (Cl), %≤ | 0.015 |
| Iodide (I), %≤ | 0.005 |
| Shen ﹙ As ﹚≤ | 0.00003 |
| Iron (Fe), %≤ | 0.0001 |
| Heavy metal (in terms of Pb), %≤ | 0.0002 |
The above-mentioned detailed description carried out with reference to embodiment to a kind of preparation method of guaranteed reagent hydrobromic acid, is explanation
Property rather than it is limited, can include several embodiments according to limited scope, therefore of the invention overall not departing from
Changing and modifications under design, should belong within protection scope of the present invention.
Claims (3)
- A kind of 1. preparation method of guaranteed reagent hydrobromic acid, it is characterised in that：Comprise the following steps that：In industrial hydrobromic acid respectively Stannous oxide and barium hydroxide are added, air-distillation, 124-127 DEG C of cut is collected, produces.
- 2. the preparation method of guaranteed reagent hydrobromic acid according to claim 1, it is characterised in that：The industrial hydrobromic acid Concentration is 40%.
- 3. the preparation method of guaranteed reagent hydrobromic acid according to claim 1, it is characterised in that：The industrial hydrobromic acid With the volume mass ratio of stannous oxide, barium hydroxide 5000 are calculated as by ml/g/g：15：1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610782410.5A CN107777667A (en) | 2016-08-31 | 2016-08-31 | A kind of preparation method of guaranteed reagent hydrobromic acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610782410.5A CN107777667A (en) | 2016-08-31 | 2016-08-31 | A kind of preparation method of guaranteed reagent hydrobromic acid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107777667A true CN107777667A (en) | 2018-03-09 |
Family
ID=61451026
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610782410.5A Pending CN107777667A (en) | 2016-08-31 | 2016-08-31 | A kind of preparation method of guaranteed reagent hydrobromic acid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107777667A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2048869A1 (en) * | 1969-10-08 | 1971-04-15 | Ici Ltd | |
| CN1126174A (en) * | 1995-01-03 | 1996-07-10 | 天津海晶集团盐化总公司 | Method for prepn. of hyrobromic acid |
| CN1143603A (en) * | 1995-03-01 | 1997-02-26 | 丰田自动车株式会社 | Method for producing oxygen and hydrogen |
| CN1210100A (en) * | 1997-08-22 | 1999-03-10 | 帝人化成株式会社 | Bromine compound production method |
| CN1218024A (en) * | 1997-10-28 | 1999-06-02 | 帝人化成株式会社 | Method for purifying bromine compound |
-
2016
- 2016-08-31 CN CN201610782410.5A patent/CN107777667A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2048869A1 (en) * | 1969-10-08 | 1971-04-15 | Ici Ltd | |
| CN1126174A (en) * | 1995-01-03 | 1996-07-10 | 天津海晶集团盐化总公司 | Method for prepn. of hyrobromic acid |
| CN1143603A (en) * | 1995-03-01 | 1997-02-26 | 丰田自动车株式会社 | Method for producing oxygen and hydrogen |
| CN1210100A (en) * | 1997-08-22 | 1999-03-10 | 帝人化成株式会社 | Bromine compound production method |
| CN1218024A (en) * | 1997-10-28 | 1999-06-02 | 帝人化成株式会社 | Method for purifying bromine compound |
Non-Patent Citations (1)
| Title |
|---|
| 刘立平: "提高氢溴酸浓度和纯度的研究", 《海盐湖与化工》 * |
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
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Application publication date: 20180309 |