Active Pharmaceutical Ingredients Industrial Grade Zinc chloride CAS 7646-85-7 CAS NO.7646-85-7

Active Pharmaceutical Ingredients Industrial Grade Zinc chloride CAS 7646-85-7

 

• Quick Details of Active Pharmaceutical Ingredients Zinc chloride

 

Product Name: Zinc chloride

Synonyms: TRIS, ENDOTOXIN TESTED;TRIS[HYDROXYMETHYL] AMINOETHANE;TRIS (HYDROXYMETHYL) AMINOMETHANE, 7-9;TRIS (HYDROXYMETHYL)AMINOMETHANE, BUFFER SUBSTANCE

 

CAS: 7646-85-7;

MF: Cl2Zn;

EINECS: 201-064-4;

MW: 136.3.

 

Product name:	Zinc chloride
Other Name:	TRIS, ENDOTOXIN TESTED;TRIS[HYDROXYMETHYL] AMINOETHANE;TRIS (HYDROXYMETHYL) AMINOMETHANE, 7-9;TRIS (HYDROXYMETHYL)AMINOMETHANE, BUFFER SUBSTANCE;
Original:	China
CAS:	7646-85-7
Molecular formula:	Cl2Zn
MW:	136.3.
EINECS:	201-064-4
Brand name	NJBNSteroid
Leading time	within 24 hours upon receipt of payment
Delivery	Fast and secure shipping by EMS, DHL, TNT, FedEx, UPS
Purity	99%
Package	Discreet and Hidden package according to specific requirement
Appearance	Faint Yellow Powder
Certification	SGS, ISO 9001, KOSHER
Payment Terms	, Money Gram , T/T, Bitcoin
Minimum Order Quantity	100g
Price	Negotiable
Usage	Zinc chloride finds wide application in textile processing, metallurgical fluxes, and chemical synthesis.
Molecular structure

 

• Overviw of Active Pharmaceutical Ingredients Zinc chloride

 

Zinc chloride is the name of chemical compounds with the formula ZnCl2and its hydrates. Zinc chlorides, of which nine crystalline forms are known, are colorless or white, and are highly soluble in water. ZnCl2 itself is hygroscopic and even deliquescent. Samples should therefore be protected from sources of moisture, including the water vapor present in ambient air. Zinc chloride finds wide application in textile processing, metallurgical fluxes, and chemical synthesis. No mineral with this chemical composition is known aside from the very rare mineral simonkolleite, Zn5(OH)8Cl2·H2O.

 

• Technical Testing Sheet of Active Pharmaceutical Ingredients Zinc chloride

 

Item	Index
	I		II		III
	Top Grade	First grade	Top Grade	First grade
(Zncl2)Zinc Chloride Content%≥	96.0	95.0	95.0	93. 0	40.0
Acid Water Content%≤	0.01	0.02	0.05	0.05	-
(znO)Hydrochloric soda content%≤	2.0	2.0	2.0	2.0	0.85
(SO4)Sulphates Content(as SO4)%≤	0.01	0.01	0.01	0.05	0.0004
(Fe)%Ferrous Content(as Fe)%≤	0.0005	0.0005	0.001	0.003	0.0002
(Pb)%Heavy Metal Content(as Pb)%≤	0.0005	0.005	0.001	0.001	0.0002
Alkali and alkaline earth content%≤	1.0	1.0	1.5	1.5	0.5
zinc corrosion test	Pass		-		pass
PH( )Value	-		-		3-4

 

• Application of Active Pharmaceutical Ingredients Zinc chloride

 

Once known as "butter of zinc," zinc chloride is a versatile chemical suitable for aiding many aspects of daily life. Zinc chloride easily binds itself to water, known as hygroscopy, so it is an ideal compound for maintaining water purity. Zinc chloride is also a conductor of electricity, making it a useful electrical compound, and it supplements the amount of zinc in both plants and animals, making it an important dietary compound.

 

1. As a metallurgical flux

 

• Zinc chloride has the ability to react with metal oxides (MO) to give derivatives of the formula MZnOCl2. This reaction is relevant to the utility of ZnCl2 solution as a flux for soldering — it dissolves oxide coatings exposing the clean metal surface. Fluxes with ZnCl2 as an active ingredient are sometimes called "tinner's fluid".

 

• Typically this flux was prepared by dissolving zinc foil in dilute hydrochloric acid until the liquid ceased to evolve hydrogen; for this reason, such flux was once known as "killed spirits". Because of its corrosive nature, this flux is not suitable for situations where any residue cannot be cleaned away, such as electronic work. This property also leads to its use in the manufacture of magnesia cements for dental fillings and certain mouthwashes as an active ingredient.

 

2. In organic synthesis

 

(1) In the laboratory, zinc chloride (Silzic) finds wide use, principally as a moderate-strength Lewis acid. It can catalyze (A) the Fischer indole synthesis, and also (B) Friedel-Crafts acylation reactions involving activated aromatic rings.

 

(2) Related to the latter is the classical preparation of the dye fluorescein from phthalic anhydride and resorcinol, which involves a Friedel-Crafts acylation. This transformation has in fact been accomplished using even the hydrated ZnCl2 sample shown in the picture above.

 

(3) Hydrochloric acid alone reacts poorly with primary alcohols and secondary alcohols, but a combination of HCl with ZnCl2 (known together as the "Lucas reagent") is effective for the preparation of alkyl chlorides. Typical reactions are conducted at 130 °C. This reaction probably proceeds via an SN2 mechanism with primary alcohols but SN1 pathway with secondary alcohols.

 

(4) Zinc chloride is also a useful starting reagent for the synthesis of many organozinc reagents, such as those used in the palladium catalyzed Negishi coupling with aryl halides or vinyl halides.In such cases the organozinc compound is usually prepared by transmetallation from an organolithium or a Grignard reagent.

 

3. In textile and paper processing

 

Concentrated aqueous solutions of zinc chloride (more than 64% weight/weight zinc chloride in water) have the interesting property of dissolving starch, silk, and cellulose. Thus, such solutions cannot be filtered through standard filter papers. Relevant to its affinity for these materials, ZnCl2 is used as a fireproofing agent and in fabric "refresheners" such as Febreze. Vulcanized fibre is made by soaking paper in concentrated zinc chloride.

 

4. Disinfectant

 

Historically, a dilute aqueous solution of zinc chloride was used as a disinfectant under the name "Burnett's Disinfecting Fluid". It is also used in some commercial brands of antiseptic mouthwash.

 

5. Skin cancer treatment

 

(1) Zinc chloride has been used in alternative medicine to cause eschars, scabs of dead tissue, in an attempt to cure skin cancers. Various products, such as Cansema or "black salve", containing zinc chloride and sold as cancer cures have been listed by the U.S. Food and Drug Administration (FDA) as fake with warning letters being sent to suppliers.

 

(2) Numerous reports in medical literature describe serious scarring and damage to normal skin by escharotic substances. Given these side-effects, its use in treatment is not warranted as there are much safer and more effective alternatives, such as radiation therapy and Mohs surgery.

 

6. Properties

 

Zinc chloride is a white crystalline granule. It usually has an acrid smell but is sometimes odorless. Zinc chloride is stable when stored and used under normal conditions, but when heated to decomposition, it can release toxic chlorine and zinc oxide fumes. Zinc chloride fumes when it establishes contact with cyanides, sulfides or potassium, which can cause fires or explosions. Its fumes are corrosive to metals.

 

7.Industrial Applications

 

Zinc chloride is used in dry cell batteries both as an electrolyte, moisture absorbent and corrosion inhibitor. It is used in fluxes for soldering, galvanizing and tinning. As an excellent emulsion breaker, zinc chloride is used to separate oil from water. It is also used as a packer fluid in oil and gas wells. Zinc chloride is put to use as an inhibitor in potable water treatment plants, cooling towers, and gas and oil wells.