SYNTECH

Certificate Of Analysis

Product: ZINC BROMIDE 99%             Test Date: 2023.07.10

QTY: 10MT                              Batch No.: SSIC-ZB23022

Test Item	Specification	Test Results
Appearance	White crystal	White crystal
ZnBr2	≧99%	99.4%
Sulfate(as SO4)	≦0.02%	≦0.02%
Chloride(as CL)	≤0.1%	0.018%
pH	4.0-6.0	4.9
Ca	≤50 ppm	3.2ppm
Cd	≤50 ppm	0.1ppm
Co	≤50 ppm	0.3ppm
Cu	≤50 ppm	1.2ppm
Fe	≤50 ppm	1.0ppm
K	≤100 ppm	1.2ppm
Na	≤100 ppm	0.2ppm
Ni	≤50 ppm	0.5ppm
Pb	≤50 ppm	2.1ppm
Test Result	Qualified

Product Data Sheet of

Zinc Bromide Powder

CAS NO.:7699-45-8

Item	Specification
Molecular formula	ZnBr2
Item	Solid
Content	99.0%min
Cl	1.0%max
SO4	0.05%max
PH	4.0-6.0
Water insoluble	0.30% max
Packing	25kg polypropylene bag with plastic liner
Usage	Mainly used as completion fluid, mounting fluid and maintaining fluid in oil drilling.

Basic Information

• Chemical Formula: Br₂Zn/ZnBr₂
• Molecular Weight: 225.19 g/mol
• CAS Number: 7699-45-8
• Appearance: White to pale cream crystalline powder or beads, highly hygroscopic (absorbs moisture from air).
• Density: 4.20–4.22 g/cm³ (at 20°C).
• Melting Point: 394°C.
• Boiling Point: 650–697°C.

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Chemical Properties

• Solubility:
  • Highly soluble in water (447 g/100 mL at 20°C).
  • Soluble in ethanol, ether, acetone, and tetrahydrofuran.
• pH: ~4 (saturated aqueous solution).
• Refractive Index: 1.5452 (at 20°C).

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Preparation Methods

1. Direct Reaction: Zinc metal reacts with pure bromine in a CO₂ atmosphere, followed by distillation.
2. Alternative Method: Zinc oxide reacts with hydrobromic acid (HBr).

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Applications

• Chemical Synthesis: Used as a catalyst in organic reactions, such as β-hydroxy ketone synthesis and oxidative bromination of alkenes/alkynes.
• Industrial Uses:
  • Synthetic fiber treatment (e.g., rayon).
  • Photography (emulsion preparation) and pharmaceuticals.
  • Oilfield applications (completion/cementing fluids).
• Batteries: Anode material in zinc batteries.

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Safety and Handling

• Hazards:
  • Corrosive (causes skin/eye burns).
  • Toxic to aquatic life (WGK Germany: 3).
• Protective Measures: Use gloves, goggles, and ventilation. Store in sealed, moisture-proof containers.
• First Aid: Rinse with water if exposed; seek medical help for severe contact.

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Regulatory Information

• Transport: Classified as UN 3260 (Corrosive, Packing Group II/III).
• Regulatory Codes:
  • RTECS: ZH1150000
  • EINECS: 231-718-4.

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Additional Notes

• Stability: Forms explosive mixtures with alkali metals (e.g., sodium, potassium).
• Environmental Impact: Avoid release into water systems due to high aquatic toxicity.

For purchasing, it is available from suppliers like TCI (>98% purity) or Sigma-Aldrich (anhydrous grade)