8.18631

Zinc bromide

anhydrous for synthesis

• 别名: Zinc bromide, Zinc dibromide
• 经验公式（希尔记法）: Br₂Zn
• CAS号: 7699-45-8
• 分子量: 225.20
• MDL號碼: MFCD00011294
• 分類程式碼代碼: 12352302
• 酶委員會索引編號: 231-718-4
• NACRES: NA.22

属性

• 品質等級: 200
• 形狀: crystals
• pH值: 4 (20 °C in H₂O, saturated solution)
• bp: 697 °C/1013 mbar
• mp: 394 °C
• 溶解度: 4470 g/L
• 密度: 4.2 g/cm³ at 20 °C
• 儲存溫度: 2-30°C
• InChI: 1S/2BrH.Zn/h2*1H;/q;;+2/p-2
• InChI 密鑰: VNDYJBBGRKZCSX-UHFFFAOYSA-L

说明

應用

Zinc bromide can be used as:

• A catalyst to synthesize β-hydroxy ketones by stereoselective semipinacol rearrangement of α-hydroxy epoxides.
• A safe brominating source for the oxidative bromination of alkenes and alkynes in combination with lead tetraacetate.

It can also be used to prepare silica-supported zinc bromide (ZnBr₂/SiO₂) composite, which is used as a catalyst to synthesize:

• Ynone derivatives via cross-coupling reaction of acid chlorides with terminal alkynes.
• 4,5-disubstituted-1,2,3-(NH)-triazole derivatives by one-pot cross-coupling and 1,3-dipolar cycloaddition reaction of acid chlorides, terminal alkynes, and sodium azide.

分析報告

Assay (argentometric): ≥ 98.0 %
Water (K. F.): ≤ 2.0 %

安全信息

• 象形圖: GHS05,GHS07,GHS09
• 訊號詞: Danger
• 危險聲明: H302 - H314 - H317 - H411
• 防範說明: P260 - P273 - P280 - P301 + P312 - P303 + P361 + P353 - P305 + P351 + P338
• 危險分類: Acute Tox. 4 Oral - Aquatic Chronic 2 - Eye Dam. 1 - Skin Corr. 1B - Skin Sens. 1
• 儲存類別代碼: 8B - Non-combustible, corrosive hazardous materials
• 水污染物質分類（WGK）: WGK 3
• 閃點（°F）: Not applicable
• 閃點（°C）: Not applicable