stavinorzn-e

stavinorzn-e - Names and Identifiers

Name	Zinc stearate
Synonyms	Synpro 8 talculinz Talculin Z stavinorzn-e Afco-chem ZNS Zinc stearate stearatedezinc Synpro stearate zinc octadecanoate Zinc Stearate, Zno
CAS	557-05-1
EINECS	209-151-9
InChI	InChI=1/2C18H36O2.Zn/c21-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18(19)20;/h22-17H2,1H3,(H,19,20)

stavinorzn-e - Physico-chemical Properties

Molecular Formula	C36H70O4Zn
Molar Mass	632.33
Density	1.095g/cm3
Melting Point	128-130 °C (lit.)
Boling Point	240℃[at 101 325 Pa]
Flash Point	180℃
Water Solubility	Insoluble
Solubility	alcohol: insoluble(lit.)
Vapor Presure	0Pa at 25℃
Appearance	Powder
Color	White
Exposure Limit	ACGIH: TWA 10 mg/m3; TWA 3 mg/m3OSHA: TWA 15 mg/m3; TWA 5 mg/m3NIOSH: TWA 10 mg/m3; TWA 5 mg/m3
Merck	14,10158
BRN	3919706
Storage Condition	Inert atmosphere,Room Temperature
Stability	Stable. Incompatible with strong oxidizing agents.
MDL	MFCD00013031
Physical and Chemical Properties	The appearance of fine white powder, feel smooth, no sand, fat odor, easy moisture absorption, non-toxic, smooth feeling, flammable, insoluble in water, soluble in hot ethanol, turpentine, benzene and other organic solvents. In the case of strong acid decomposition of stearic acid and the corresponding zinc salts.
Use	It is used in the pharmaceutical industry, in the formulation of curing oils and lubricants, and also as a paint desiccant. For the processing of PVC and rubber non-toxic products, with calcium stearate, barium stearate and synergistic effect, can effectively improve the light thermal stability of PVC and rubber products, PVC processing dosage is usually less than 1; for rubber products, but also for PP, PE, PS, EPS polymerization additives and pencil lead manufacturing, the general dosage of 1~3.

stavinorzn-e - Risk and Safety

Hazard Symbols	Xi - Irritant
Risk Codes	37 - Irritating to the respiratory system
Safety Description	S22 - Do not breathe dust. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S38 - In case of insufficient ventilation, wear suitable respiratory equipment. S24/25 - Avoid contact with skin and eyes.
WGK Germany	-
RTECS	ZH5200000
TSCA	Yes
HS Code	29157090
Toxicity	LD50 oral in rat: > 10gm/kg

stavinorzn-e - Upstream Downstream Industry

Raw Materials

Zinc sulphate
Sodium hydroxide
Zinc oxide
Stearic acid
Palm oil

stavinorzn-e - Standard

Authoritative Data Verified Data

This line was prepared by reacting stearic acid with zinc. Mainly a mixture of zinc stearate (C36H7004Zn) and zinc palmitate (C32H6204Zn). The zinc oxide (ZnO) content should range from 12.5% to 14.0%.

Last Update：2024-01-02 23:10:35

stavinorzn-e - Trait

Authoritative Data Verified Data

This product is white or off-white fine powder.
This product is almost insoluble in water or anhydrous ethanol.

Last Update：2022-01-01 11:26:22

stavinorzn-e - Introduction

It is slightly smelly and has a smooth feeling in contact with the skin. Neutral reaction. Can be decomposed by dilute acid. Soluble in organic solvents such as benzene, hot ethanol and turpentine, insoluble in water, ethanol and ether. The minimum lethal dose (rat, abdominal cavity) is 250mg/kg.

Last Update：2022-10-16 17:26:21

stavinorzn-e - Differential diagnosis

Authoritative Data Verified Data

take about 25g of this product, heat 200ml of water and 60ml of dilute sulfuric acid, heat to separate fatty acids into oil layers for standby; Add dilute sulfuric acid to the water layer for acidification, add 1 drop of 0.1% copper sulfate solution and several drops of ammonium mercuric thiocyanate solution to generate purple precipitate.
take the oil layer under Item (1) of identification and wash with boiling water until the washing solution does not show sulfate reaction. Collect the oil layer in a small beaker, cool, discard the water layer, and heat to melt the oil layer, heat filtered and dried at 105°C for 20 min. The freezing point shall be determined according to law (General rule 0613) and shall not be lower than 54°C.

Last Update：2022-01-01 11:26:22

stavinorzn-e - Exam

Authoritative Data Verified Data

pH

take this product l.Og, add ethanol 5ml shake, then add water 20ml and phenol red indicator solution 0.1ml, so that the solution becomes yellow by consumption of hydrochloric acid titration solution (O. 1 mol/L) should not exceed the volume of 0.30ml; Or the solution becomes red sodium hydroxide titration solution consumed (0.lmol/L) should not exceed 0 .10ml.

acid value of fatty acids

0.20g of the residue obtained under the color of the solution was taken, and a mixed liquid of ethanol-diethyl ether (1: 1) was added [phenolphthalein indicator liquid l was added immediately before use. Oml, with sodium hydroxide titration solution (0.1 mol/L) to micro pink] 25ml to dissolve, measured according to law (General 0713), acid value should be 195~210.

color of solution

Take 5.0g of this product, add 50ml of ether and nitric acid solution (l.l -10) 40ml, heated to reflux until the solution was clear, allowed to cool, transferred to a separatory funnel, shaken, and placed in layers. The ether layer was extracted twice with water, 4ml each time; The ether layer was evaporated to dryness, and the residue was dried at 105 ° C. For later use; All the aqueous layers were combined, washed with 15ml of ether, and the ether layer was discarded, the water layer is washed off with ether on the water bath, allowed to cool, transferred to a 50ml measuring flask, diluted with water to the scale, and then shaken to serve as a test solution, which is used for color development, it shall not be deeper in comparison with the yellow No. 1 Standard Colorimetric solution (General rule 0901 first method).

clarity and color of fatty acid solution

take 0.5g of the residue obtained under the color item of the solution, Add 10ml of chloroform to dissolve it, and check according to law (General rule 0901 and general rule 0902). The solution should be clear and colorless. If the color is developed, it shall not be deeper than the yellow No. 2 Standard Colorimetric solution (General rules 0901 first method).

chloride

take 2.0ml of the test solution prepared under the color item of the solution, check according to law (General rule 0801), and compare with the control solution made of the standard gasification sodium solution, no more concentrated (0.025%).

sulfate

take 1.0ml of the test solution prepared under the color item of the solution, put it in a 50ml measuring flask, dilute it to the scale with water, and shake it well. Take another 12.5, check according to law (General rule 0802), and the standard potassium sulfate solution 1 .5ml made of the control solution, not more concentrated (0.6%).

cadmium salt

The sample solution prepared under the color item of the precise measurement solution 2 0 .0M l, put it in a 50ml measuring flask, dilute to the scale with nitric acid solution (1.1-10), shake well, and use it as a test solution by atomic absorption spectrophotometry (General 0406), measured at a wavelength of 228.8nm. In addition, cadmium standard solution was diluted with nitric acid solution (1.1-10) to make a reference solution containing 0.2ug of cadmium per 1 ml, and the same method was used for determination. The absorbance of the test solution shall not be greater than that of the reference solution (0.0005%).

lead salt

The test solution prepared under the color of the solution was taken and measured by atomic absorption spectrophotometry (General 0406) at a wavelength of 217 · Onm. In addition, take the appropriate amount of standard lead stock solution, and dilute with nitric acid solution (1.1-10) to make the reference solution containing 2.5 of lead in each lml, the absorbance of the test solution shall not be greater than that of the reference solution (0.0025%).

arsenic salt

take 3.33g of this product, add 50ml of water and 5ml of sulfuric acid, slowly boil until the oil layer is clear and the volume of the solution is reduced to about 25ml, filter and cool while hot, dilute to 50ml with water, measure 20ml, add water 8ml, inspection according to law (General Principles 0822 second law), should meet the requirements (0.000 15%).

Last Update：2022-01-01 11:26:23

stavinorzn-e - Content determination

Authoritative Data Verified Data

weigh about 1g of this product accurately, add 50ml of 0.05 mo1/L sulfuric acid solution, boil for at least 10 minutes until the oil layer is clear, and make up water to the initial volume if necessary. Cool, filter, wash the filter and beaker with water until the wash solution is not acidic to the blue litmus paper; Combine the filtrate and wash solution, and add ammonia-gasified ammonium buffer (6.75g of gasified ammonium, add water to dissolve, add 57ml of concentrated ammonia solution, dilute to 100ml with water) 15ml and a small amount of Chrome Black T indicator, heat to 40°C, and titrate with ethylene diamine tetraacetic acid disodium titration solution (0.05 mol/L) until the solution is pure blue. Each 1 ml of ethylene diamine tetraacetic acid disodium titration solution (0.05mol/L) corresponds to 4.069mg of ZnO.

Last Update：2022-01-01 11:26:24

stavinorzn-e - Category

Authoritative Data Verified Data

pharmaceutical excipients, lubricants, etc.

Last Update：2022-01-01 11:26:24

stavinorzn-e - Storage

Authoritative Data Verified Data

sealed storage.

Last Update：2022-01-01 11:26:24

stavinorzn-e - Reference Information

LogP	4.64 at 25℃
NIST chemical information	information provided by: webbook.nist.gov (external link)
EPA chemical substance information	information provided by: ofmpeb.epa.gov (external link)
Overview	zinc stearate is a white, light, fine powder. Molecular formula ZN(C17H35COO)2, molecular structure rcooznocr (R is a mixed alkyl group in industrial stearic acid), flammable, specific gravity 1.095, auto-ignition point 900 ℃, density 1.095, melting point 130 ℃, a smooth feeling. Insoluble in water, ethanol, ether, soluble in hot ethanol, turpentine, benzene and other organic solvents and acids. Zinc stearate is dissolved when heated in an organic solvent and cooled to form a gum, which is decomposed into stearic acid and the corresponding zinc salt when exposed to a strong acid. There are lubricity, hygroscopicity, non-toxic, micro-irritating, non-polluting, non-hazardous characteristics. Zinc stearate and calcium stearate can be separated by the property that zinc stearate is soluble in benzene and calcium stearate is insoluble in benzene. zinc stearate is insoluble in polar solvents but is highly soluble in chlorinated hydrocarbons of the aromatic compound agent when heated. They are mainly used in the plastic and rubber industry and are used as mold release agents and lubricants due to their good compatibility.
How to remove residual zinc stearate from aluminum surface processing	the residual zinc stearate is generally processed by grinding. The substrate may be damaged by the use of inducing acids.
reference quality standard	HG /T3667-2000 project top grade first grade qualified product appearance white light powder moisture ≤ 2% zinc content,% 10.3~11.3 10.3~11.3 10.0~11.5 free acid%,≤ 0.8 1.0 1.5% heating loss%,≤ 0.8 1.0 1.5 melting point, ℃ 120±5 120±5 120±5 particle size (through Test Sieve) ≥ 99.0 (0.045) 99.5 (0.075) 95.0 (0.075)
function and use	zinc stearate has good thermal stability, small initial coloring, good light stability and synergistic effect with calcium stearate and barium stearate, with the role of foam, can be used for foaming products as a foaming aid, can be used as a lubricant for cosmetics flour lubricant glue powder plastic products lubricant zinc stearate used as a stabilizer for polyvinyl chloride. With barium-cadmium soap, mainly used for soft products, is characterized by inhibition of initial coloring, to avoid sulfide pollution. Zinc stearate can also be used as Styrene (polystyrene and ABC, SAN resin), phenolic resin, amino resin and other thermosetting plastics and polyester plastic, transparent products lubricants and mold release agents. In the rubber industry, it is used as a lubricant and anti-blocking agent for rubber compounds, and as an activator of vulcanization catalyst. Polishing agent for textile products paint industry enamel industry used as leveling agent
Use	used as a softening lubricant for rubber products, as a polishing agent for textiles, PVC plastic stabilizer used as a stabilizer for PVC plastic products, rubber products softener used in the pharmaceutical industry, curing oil and lubricant formulation, also used as paint desiccant. For the processing of PVC and rubber non-toxic products, with calcium stearate, barium stearate and synergistic effect, can effectively improve the light thermal stability of PVC and rubber products, PVC processing dosage is usually less than 1; for rubber products, but also for PP, PE, PS, EPS polymerization additives and pencil lead manufacturing, the general dosage of 1~3. stabilizer; Lubricant; Grease; Accelerator; Thickener used in petrochemical industry polyethylene, polystyrene, polyvinyl chloride and high-grade chemical fiber color master dispersant, heat stabilizer. For color Master (grain) as a heat stabilizer, dispersant, lubricant.
spontaneous combustion temperature	1454 ° F.
toxic substance data	information provided by: pubchem.ncbi.nlm.nih.gov (external link)

Last Update：2024-04-09 19:05:12

Jiangsu Pules Biotechnology Co.,Ltd.

stavinorzn-e

Zinc stearate

CAS: 557-05-1

Molecular Formula: C36H70O4Zn

stavinorzn-e - Names and Identifiers

stavinorzn-e - Physico-chemical Properties

stavinorzn-e - Risk and Safety

stavinorzn-e - Upstream Downstream Industry

stavinorzn-e - Standard

Authoritative Data Verified Data

stavinorzn-e - Trait

Authoritative Data Verified Data

stavinorzn-e - Introduction

stavinorzn-e - Differential diagnosis

Authoritative Data Verified Data

stavinorzn-e - Exam

Authoritative Data Verified Data

pH

acid value of fatty acids

color of solution

clarity and color of fatty acid solution

chloride

sulfate

cadmium salt

lead salt

arsenic salt

stavinorzn-e - Content determination

Authoritative Data Verified Data

stavinorzn-e - Category

Authoritative Data Verified Data

stavinorzn-e - Storage

Authoritative Data Verified Data

stavinorzn-e - Reference Information

Supplier List

stavinorzn-e Request for Quotation

Zinc stearate

CAS: 557-05-1

Molecular Formula: C36H70O4Zn

stavinorzn-e - Names and Identifiers

stavinorzn-e - Physico-chemical Properties

stavinorzn-e - Risk and Safety

stavinorzn-e - Upstream Downstream Industry

stavinorzn-e - Standard

Authoritative Data Verified Data

stavinorzn-e - Trait

Authoritative Data Verified Data

stavinorzn-e - Introduction

stavinorzn-e - Differential diagnosis

Authoritative Data Verified Data

stavinorzn-e - Exam

Authoritative Data Verified Data

pH

acid value of fatty acids

color of solution

clarity and color of fatty acid solution

chloride

sulfate

cadmium salt

lead salt

arsenic salt

stavinorzn-e - Content determination

Authoritative Data Verified Data

stavinorzn-e - Category

Authoritative Data Verified Data

stavinorzn-e - Storage

Authoritative Data Verified Data

stavinorzn-e - Reference Information

Supplier List

stavinorzn-e