Chloroauric acid
- CAS No.
- 16903-35-8
- Chemical Name:
- Chloroauric acid
- Synonyms
- TETRACHLOROAURIC ACID;tetrachloroauric;auricacid;Gold acid;ammonium gold;chlorauricacid;CHLORAUIC ACID;CHLOROAURIC ACID;Chlorlauric acid;browngoldchloride
- CBNumber:
- CB4148823
- Molecular Formula:
- AuCl4H
- Molecular Weight:
- 339.79
- MOL File:
- 16903-35-8.mol
- MSDS File:
- SDS
- Modify Date:
- 2025/1/27 9:38:02
| Melting point | 30°C |
|---|---|
| Boiling point | 100 °C |
| Density | 3.9 g/mL at 25 °C |
| storage temp. | 2-8°C |
| solubility | H2O: soluble |
| form | Liquid |
| color | yellow |
| Water Solubility | Miscible with water, alcohol, ester, ether and ketone. |
| Sensitive | Light Sensitive |
| Merck | 13,4537 |
| Exposure limits |
ACGIH: Ceiling 2 ppm OSHA: Ceiling 5 ppm(7 mg/m3) NIOSH: IDLH 50 ppm; Ceiling 5 ppm(7 mg/m3) |
| Stability | Stable. Hygroscopic. Light sensitive. Incompatible with strong bases, sulfides, cyanides, carbonates. |
| InChIKey | FAGGMVVGLLFOQV-UHFFFAOYSA-J |
| CAS DataBase Reference | 16903-35-8(CAS DataBase Reference) |
| EPA Substance Registry System | Aurate(1-), tetrachloro-, hydrogen, (SP-4-1)- (16903-35-8) |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |     GHS05,GHS07,GHS08,GHS09 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Danger | |||||||||
| Hazard statements | H290-H302-H314-H373-H411 | |||||||||
| Precautionary statements | P273-P280-P301+P312-P303+P361+P353-P305+P351+P338-P314 | |||||||||
| Hazard Codes | C,Xi | |||||||||
| Risk Statements | 36/37/38-43-34-36/38-23 | |||||||||
| Safety Statements | 26-36/37/39-45-36/37 | |||||||||
| RIDADR | UN 3260 8/PG 3 | |||||||||
| WGK Germany | 3 | |||||||||
| RTECS | CK6330000 | |||||||||
| F | 3-8-10 | |||||||||
| TSCA | Yes | |||||||||
| HazardClass | 8 | |||||||||
| PackingGroup | III | |||||||||
| NFPA 704 |
|
Chloroauric acid price More Price(3)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich(India) | 484385 | Gold(III) chloride solution 99.99% trace metals basis, 30?wt. % in dilute HCl | 16903-35-8 | 10G | ₹58774.5 | 2022-06-14 | Buy |
| Sigma-Aldrich(India) | 484385 | Gold(III) chloride solution 99.99% trace metals basis, 30?wt. % in dilute HCl | 16903-35-8 | 50G | ₹212576.1 | 2022-06-14 | Buy |
| Sigma-Aldrich(India) | 08269 | Gold Standard for AAS TraceCERT?, 1000?mg/L Au in hydrochloric acid | 16903-35-8 | 100ML | ₹5250.3 | 2022-06-14 | Buy |
Chloroauric acid Chemical Properties,Uses,Production
Chemical Properties
golden to yellowish brown crystals or powder
Uses
The HCl plus the HNO2 (hydrochloric and nitric acids) are combined to produce agua regia acid, which is the only acid that can dissolve gold.
Purification Methods
It is obtained as a dark red crystalline mass by dissolving Au in aqua regia and evaporating. When sublimed at 180o, the crystals are ruby red. The anhydrous salt is hygroscopic, soluble in H2O but sparingly soluble in EtOH and Et2O. Aurochloric acid is formed when AuCl3 is dissolved in HCl. [Diemer J Am Chem Soc 35 553 1913, Glemser & Sauer Handbook of Preparative Inorganic Chemistry (Ed. Brauer) Academic Press Vol II p1 056 1965.]
Properties and Applications
Chloroauric acid is an orange-yellow crystal that is very easy to deliquesce and soluble in water. It decomposes into gold when heated. The aqueous solution of chloroauric acid contains square planar [AuC14]- ions, from which many salts containing planar square ions [AuX4]- (X=F, Cl, Br, I, CN, SCN, NO3) can be prepared. It can be used for local gold plating of semiconductor and integrated circuit lead frames, gold plating of printed circuit boards, electronic connectors and other electrical contact components. It can also be used to make red glass. It is used as an analytical reagent, specifically for microanalysis of clocks and absolutes and measurement of alkaloid composition. It is also used for photographic materials. Chloroauric acid salts, especially sodium chloroaurate NaAuCl4 (prepared by the reaction of AuCls and NaCl), can replace toxic mercury (II) salts as catalysts for alkyne reactions. At the same time, chloroauric acid has important applications in the preparation of nano-level gold. Generally, the fluorescent nano-gold prepared by direct reduction of chloroauric acid with a reducing agent has important applications in analytical chemistry.
Chloroauric acid Preparation Products And Raw materials
| Supplier | Tel | Country | ProdList | Advantage | Inquiry |
|---|---|---|---|---|---|
| Evans Fine Chem | +91-9821340302 +91-9821340302 | Maharashtra, India | 286 | 58 | Inquiry |
| Arora Matthey Limited | +91-9830058614 +91-9830058614 | West Bengal, India | 24 | 58 | Inquiry |
| INDIAN PLATINUM PRIVATE LIMITED | +91-9322395199 +91-9322395199 | Mumbai, India | 54 | 58 | Inquiry |
| Modicon Private Limited | +91-2222825465 +91-2222825464 | Maharashtra, India | 18 | 58 | Inquiry |
| CLEARSYNTH LABS LTD. | +91-22-45045900 | Hyderabad, India | 6257 | 58 | Inquiry |
| Alfa Aesar | 1 800 209 7001 | Maharashtra, India | 6905 | 58 | Inquiry |
| Central Drug House(P) Ltd. | 91-11-49404040 | New Delhi, India | 6157 | 58 | Inquiry |
| Parekh Industries Limited | 08046056054 | Mumbai, India | 16 | 58 | Inquiry |
| ALPHA CHEMIKA | +91-22-22061123 +91-22-66382501 | Mumbai, India | 1679 | 43 | Inquiry |
| Belami Fine Chemicals Private Limited | 08048958442 | Mumbai, India | 49 | 58 | Inquiry |
| Supplier | Advantage |
|---|---|
| Evans Fine Chem | 58 |
| Arora Matthey Limited | 58 |
| INDIAN PLATINUM PRIVATE LIMITED | 58 |
| Modicon Private Limited | 58 |
| CLEARSYNTH LABS LTD. | 58 |
| Alfa Aesar | 58 |
| Central Drug House(P) Ltd. | 58 |
| Parekh Industries Limited | 58 |
| ALPHA CHEMIKA | 43 |
| Belami Fine Chemicals Private Limited | 58 |
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