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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
MDL Number:
MFCD00011322
MOL File:
16903-35-8.mol
MSDS File:
SDS
Last updated:2024-10-30 18:52:02

Chloroauric acid Properties

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)
EWG's Food Scores 1
FDA UNII 8H372EGX3V
EPA Substance Registry System Aurate(1-), tetrachloro-, hydrogen, (SP-4-1)- (16903-35-8)

SAFETY

Risk and Safety Statements

Symbol(GHS)  GHS hazard pictogramsGHS hazard pictogramsGHS hazard pictogramsGHS hazard pictograms
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
3-8-10
TSCA  Yes
HazardClass  8
PackingGroup  III
NFPA 704
0
3 0

Chloroauric acid price More Price(26)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 484385 Gold(III) chloride solution 99.99% trace metals basis, 30wt. % in dilute HCl 16903-35-8 10g $560 2024-03-01 Buy
Sigma-Aldrich 484385 Gold(III) chloride solution 99.99% trace metals basis, 30wt. % in dilute HCl 16903-35-8 50g $2220 2024-03-01 Buy
Sigma-Aldrich 08269 Gold Standard for AAS TraceCERT?, 1000?mg/L Au in hydrochloric acid 16903-35-8 100mL $64 2024-03-01 Buy
Alfa Aesar 044744 Hydrogentetrachloroaurate(III),solution Au40-44%w/w(cont.Au) 16903-35-8 1g $242 2024-03-01 Buy
Alfa Aesar 044744 Hydrogentetrachloroaurate(III),solution Au40-44%w/w(cont.Au) 16903-35-8 5g $1192 2024-03-01 Buy
Product number Packaging Price Buy
484385 10g $560 Buy
484385 50g $2220 Buy
08269 100mL $64 Buy
044744 1g $242 Buy
044744 5g $1192 Buy

Chloroauric acid Chemical Properties,Uses,Production

Chloroauric acid

Chloroalic acid is also known as "gold chloride", "gold chloride tetrahydrate". Chemical formula is HAuCl4 • 4H2O. Molecular weight is 411.85. It is a yellow needle crystal. It is toxic and corrosive. It is easily soluble in water, and soluble in ethanol and ether, and slightly soluble in chloroform. Anhydrous chloroauric acid can be crystallized from the ethanol solution. It will decompose under heat condition, and decompose into gold trichloride at 120 ° C. Exposure of it leads to black spots. In alkaline solution, it reacts with KI to precipitate brown gold. In the acidic solution, it generates "cinnamon purple in the case of tin dichloride. Its aqueous solution was purple after dealing with methyl orange, and it turns green after 1 to 3 drops of hydrochloric acid, and then it becomes lavender after gold salt solution. We get gold hydroxide precipitation after adding cold potassium hydroxide solution. It was reduced to gold powder with sulfur dioxide.

Preparation

Dissolve the pure gold in aqua regia (or hydrochloric acid saturated by chlorine gas). After distillation and crystallization, we get the product.

Application

Chlorine acid is mainly used for alkaloid determination, electroplating gold, photography, gold powder, porcelain coloring, red glass manufacturing, special ink and treatment of tuberculosis. It can also be used as analytical reagent, such as microanalysis of rubidium (Rb) and cesium (Cs). It is used for semiconductor, electronic connector and local gold-plated of integrated circuit lead frame, also for printing circuit boards.

Chemical Properties

golden to yellowish brown crystals or powder

Uses

Hydrogen tetrachloroaurate(III) acts as a precursor used in the purification of gold by electrolysis. It is also used for the recovery, concentration, purification and analytical determination of gold. It acts as a key starting material for the preparation of gold compounds. It plays an important role as a catalyst in the preparation of 2-arylbenzoxazoles.

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

Raw materials

Preparation Products

Global( 252)Suppliers
Supplier Tel Email Country ProdList Advantage
SHANGHAI KEAN TECHNOLOGY CO., LTD.
+8613817748580 cooperation@kean-chem.com China 40066 58
Hebei Weibang Biotechnology Co., Ltd
+8615531157085 abby@weibangbio.com China 8816 58
Hebei Chuanghai Biotechnology Co,.LTD
+86-13131129325 sales1@chuanghaibio.com China 5893 58
Hebei Dangtong Import and export Co LTD
+86-13910575315 +86-13910575315 admin@hbdangtong.com China 999 58
Shandong Juchuang Chemical Co., LTD
+undefined15030412209 admin@juchuangchem.com China 387 58
Hebei Saisier Technology Co., LTD
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HebeiShuoshengImportandExportco.,Ltd
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Henan Tianfu Chemical Co.,Ltd.
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View Lastest Price from Chloroauric acid manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
Chloroauric acid pictures 2024-10-31 Chloroauric acid
16903-35-8
US $6.00 / kg 1kg 99% 2000KG/Month HebeiShuoshengImportandExportco.,Ltd
Chloroauric acid pictures 2024-10-31 Chloroauric acid
16903-35-8
US $6.00 / KG 1KG 99% 20TONS Hebei Longbang Technology Co., Ltd
Chloroauric acid pictures 2024-10-30 Chloroauric acid
16903-35-8
US $1.00 / KG 1KG 99% 10mt Hebei Weibang Biotechnology Co., Ltd
Gold(III) chloride solution, ~ 30 wt. % in dilute HCl, 99.99% Auric Chloride Acid CHLORO AURIC ACID (Gold Chloride) GOLD CHLORIDE ( CHLOROAURIC ACID ) GOLD(III) CHLORIDE ACID 4 H2O Gold chlorhydric acid Hydrogentetrachloroaurate(III)hydrate(99.9%-Au)(49%Au)(Chloroauricacid) Gold(III) chloride solution in H2O Hydrogentetrachloroaurate(III)hydrate(99.9985%-Au)(49%Au)PURATREM Aurate(1-), tetrachloro-, hydrogen, (SP-4-1)- gold atomic spectroscopy standard concentrate 1.00 g au gold standard for aas gold standard for icp gold(iii) chloride solution Hydrogen tetrachloroaurate(III), trihydrate, reagent ACS TETRACHLOROAURIC (III) ACID - SOLUTION Hydrogen tetrachloroaurate(III), solution, Au 40-44% w/w (cont. Au) Gold Chloride Crystal (Chloro Auric Acid) Gold Chloride Solution (40% wt/wt) Made from 99.99% Gold GOLD CHLORIDE pure Hydrogen Tetrachloroaurate() Tetrahydrate Chloroauric() Acid Tetrahydrate Tetrachloroauric(III) acid GOLD CHLORIDE, BROWN, AuCl3 Gold atomic spectroscopy standard concentrate 1.00 g Au,Gold(III) chloride solution browngoldchloride chlorauricacid goldtetrachloride,acid goldtrichloridehydrochloride hydrogen,(sp-4-1)-aurate(1-tetrachloro- hydrogentetrachloroaurate(1-) tetrachloro-,hydrogen,(SP-4-1)-Aurate(1-) tetrachloro-aurate(1-hydrogen Hydrogen tetrachloroaurate(III) solution, Au 40-44 wt. % auricacid tetrachloroauric(iii)acidhydrate(51%au) Aurate(1-),tetrachloro-, hydrogen (1:1), (SP-4-1)- Gold(III) chloride solution, 98%,Au 47.8% GOLD TRICHLORIDE ACID BROWN GOLD TRICHLORIDE ACID YELLOW GOLD CHLORIDE (ACID YELLOW) GOLD CHLORIDE, BROWN GOLD ATOMIC SPECTROSCOPY STANDARD HYDROGEN TETRACHLOROAURATE (III) CHLOROAURIC ACID YELLOW CHLOROAURIC ACID CHLOROAURIC ACID BROWN CHLORAUIC ACID GOLD ATOM SPECT. STANDARD SOLUTION, FLUK A, IN HYDROCH.A. GOLD ATOMIC SPECTROSCOPY STANDARD CONC. 1.00 G AU, AMPOULE GOLD ICP STANDARD SOLUTION FLUKA Manufacturers wholesale High Purity Chloroauric acid CAS NO.16903-35-8 Chlorlauric acid Au50%Gold(III chloride Tetrachlorogoldsure ammonium gold Gold acid GOLD CHLORIDE HCL