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557-05-1

Basic Information
CAS No.: 557-05-1
Name: Zinc stearate
Article Data: 33
Molecular Structure:
Molecular Structure of 557-05-1 (Zinc stearate)
Formula: C36H70O4Zn
Molecular Weight: 632.339
Synonyms: Octadecanoicacid, zinc salt (9CI);Stearic acid, zinc salt (8CI);DLG 20;DLG 20A;Dermarone;Dibasic zinc stearate;Disperso D;E 366;Electol MZ 2;F 115;F 155 (salt);GF 200;Hidorin D 523;Hidorin F 115;Hidorin F930;Hidorin H 943;Hidorin Z 8-30;Hidorin Z 8-36;Hymicron F 115;Hymicron ZJ 557;Hymicron ZK349;KV 85A1;L 111;LG 3;LG 3 (salt);Ligastab ZN 70;MFX 50J3;MR 450;MZ 2;MZN 2;Metallac;NF-SZ;PG 2000;RSN 131HS;SAK-ZS-P;SAK-ZS-PLB;SP 100ZB;SZ 2000;SZ-DF-PF;SZ-PG;SZ-T;SZ-TF;Shinryu FZ;Stavinor CecavonZN;Synpro ABG;Talculin Z;Z 2000;Z 2000 (salt);Z 7-30;ZNS-P;ZS 101;Zinc Stearate L;Zinc distearate;Zinc octadecanoate;
EINECS: 209-151-9
Density: 1.095 g/cm3
Melting Point: 128-130 °C(lit.)
Boiling Point: 359.4 °C at 760 mmHg
Flash Point: 162.4 °C
Solubility: insoluble in water
Appearance: white powder with fatty acid odour
Hazard Symbols: IrritantXi
Risk Codes: 37
Safety: 22-26-36/37/39-38
PSA: 80.26000
LogP: 9.99310
Synthetic route
57-11-4

stearic acid

557-05-1

zinc stearate

Conditions
ConditionsYield
With zinc(II) oxide; citric acid In water at 60 - 70℃; for 0.5h;100%
With zinc(II) oxide; hydroxypropyl methylcellulose; citric acid In water at 65 - 75℃; for 1h;100%
With Tergitol 15-S-7; zinc(II) oxide; hydroxypropyl methylcellulose; citric acid In water at 55 - 70℃; for 0.25 - 1h;99.1%
57-11-4

stearic acid

zinc(II) oxide

557-05-1

zinc stearate

Conditions
ConditionsYield
In solid byproducts: H2O; High Pressure; synthesized by intense high-pressure shear treatment (Usp. Khim., 2001, vol. 70, no. 1, pp. 72-87);97%
In ethanol prepn. by refluxing ZnO with excess of carboxylic acid in EtOH for about2 h; cooled; ppt. filtered off; washed (EtOH) repeatedly; collected; kept over silica gel in vac. desiccator; elem. anal.;85%
Stage #1: stearic acid; zinc(II) oxide With dihydrogen peroxide at 130 - 160℃; for 1.5h;
Stage #2: Reagent/catalyst;
at 130 - 170℃; under 1575.16 Torr; for 0.75h;
5970-45-6

zinc(II) acetate dihydrate

57-11-4

stearic acid

557-05-1

zinc stearate

Conditions
ConditionsYield
In neat (no solvent) byproducts: CH3COOH; stoich. mixt. stirred at 180°C (thermotstated oil reactor) for 3 h; CH3COOH stripped by N2 stream, collected in condensor;64%
55489-71-9

tetramethyl ammonium stearate

74895-05-9

(Zn(S2P(OC6H4Me-p)2)2)

A

77451-12-8

tetramethylammonium bis(OO'-di-p-tolyl dithiophosphato-S) (OO'-di-p-tolyl dithiophosphato-SS')zincate

B

C

(NMe4)(S2P(OC6H4Me-p)2)

(NMe4)(S2P(OC6H4Me-p)2)

Conditions
ConditionsYield
In isopropyl alcohol soln. (NMe4)(OCOC17H35) in propan-2-ol added slowly with stirring to (Zn(S2P(OC6H4Me-p)2)2) in propan-2-ol; ppt. (zinc stearate) filtered off, soln. allowed to stand at room temp.for 24 h, (NMe4)(Zn(S2P(OC6H4Me-p)2)3) filtered off, mother-liquor evapd. in vacuo - (NMe4)(S2P(OC6H4Me-p)2);A 25%
B n/a
C 30%
2512-59-6

bis(diethyldithiophosphinato)zinc

27325-75-3

tetraethylammonium stearate

A

146576-10-5

tetraethylammonium diphenyldithiophosphinate

B

77259-18-8

tetraethylammonium bis(diphenyldithiophosphinato-S) (diphenyldithiophosphinato-SS')zincate

C

557-05-1

zinc stearate

Conditions
ConditionsYield
In acetone mixt. (Zn(S2PPh2)2) and (NEt4)(OCOC17H35) in acetone refluxed for 24 h; ppt. (zinc stearate) filtered off, soln. allowed to stand at room temp.for 24 h, (NEt4)(Zn(S2PPh2)3) filtered off, mother-liquor evapd. in vacuo - (NEt4)(S2PPh2);A 15%
B 20%
C n/a
ZnO-copper oxide

ZnO-copper oxide

57-11-4

stearic acid

557-05-1

zinc stearate

Conditions
ConditionsYield
at 75℃;
57-11-4

stearic acid

7733-02-0

zinc(II) sulfate

557-05-1

zinc stearate

Conditions
ConditionsYield
With potassium hydroxide In ethanol; water KOH aq. soln. was added dropwise to stearic acid ethanol soln. slowly and stirred 2 h, zinc sulphonate aq. soln. was added, stirred for 2 h; refrigerator for 1 night, ppt. was filtered, washed with distilled water, ethanol, acetone, recrystd. from benzene, dried under vac. at 60°C over night;
57-11-4

stearic acid

7646-85-7

zinc(II) chloride

557-05-1

zinc stearate

Conditions
ConditionsYield
In sodium hydroxide acid dissolved at 80°C, an aq. chloride added dropwise, heated atca. 80°C for ca. 30 min; ppt. collected, dried (vac.);
With sodium hydroxide at 40℃;
In water at 70℃;
822-16-2

sodium stearate

zinc(II) chloride

zinc(II) chloride

zinc stearate

zinc stearate

Conditions
ConditionsYield
In water aq. soln. of Na-salt of fatty acid added to aq. ZnCl2; washed with EtOH and water;
In ethanol; water equimolar aq. ZnCl2 slowly titrated with sodium stearate in aq. EtOH; pptd. (Et2O), filtered, dried at 60°C (vac.) overnight; elem. anal.;
In ethanol; water stoich. amt. of aq. soln. of ZnCl2 added to alcoholic soln. of org. compd.; ppt. filtered and washed with EtOH and water, characterized by powder XRD patterns;
In diethyl ether; ethanol pptn. in diethylether; filtration and drying (60°C, vac.), repeated 5x; IR, elem. anal.;
In water
bis(dimethylcarbamodithioato-κS,κS')zinc(II)

bis(dimethylcarbamodithioato-κS,κS')zinc(II)

60080-83-3

tetrabutylammonium stearate

A

{N(CH2CH2CH2CH3)4}(1+)*{Zn(S2CN(CH3)2)3}(1-) = {N(CH2CH2CH2CH3)4}{Zn(S2CN(CH3)2)3}

B

557-05-1

zinc stearate

Conditions
ConditionsYield
In acetone reflux 2 h;
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    Product Name: Zinc stearate Synonyms: Afco-chem ZNS;Zinc Stearate, Zno;stavinorzn-e;stearatedezinc;Synpro 8;Synpro stearate;Talculin Z;talculinz CAS: 557-05-1 MF: C36H70O4Zn MW: 632.33 EINECS: 209-151-9 Product

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Chemistry

Molecular Structure of Zinc stearate (CAS NO.557-05-1):

IUPAC Name: zinc octadecanoate 
Empirical Formula: C36H70O4Zn
Molecular Weight: 632.3476
H bond acceptors: 2
H bond donors: 1
Freely Rotating Bonds: 16
Polar Surface Area: 37.3Å2
Index of Refraction:
Molar Refractivity: cm3
Molar Volume: cm3
Surface Tension: dyne/cm
Flash Point: 162.4 °C
Enthalpy of Vaporization: 63.84 kJ/mol
Boiling Point: 359.4 °C at 760 mmHg
Vapour Pressure: 8.58E-06 mmHg at 25°C
Melting point: 128-130 °C(lit.)
Water Solubility: Insoluble
Merck: 14,10158
Stability: Stable. Incompatible with strong oxidizing agents.

Toxicity Data With Reference

1.    

itr-rat LDLo:250 mg/kg

    BJIMAG    British Journal of Industrial Medicine. 15 (1958),130.

Consensus Reports

Zinc and its compounds are on the Community Right-To-Know List. Reported in EPA TSCA Inventory.

Safety Profile

Poison by intratracheal route. Inhalation of zinc stearate has been reported as causing pulmonary fibrosis. A nuisance dust. Combustible when exposed to heat or flame. To fight fire, use water, foam, CO2, dry chemical. When heated to decomposition it emits toxic fumes of ZnO. See also ZINC COMPOUNDS.
Hazard Codes: IrritantXi
Risk Statements: 37
R37:Irritating to respiratory system
Safety Statements: 22-26-36/37/39-38
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.
RTECS: ZH5200000

Standards and Recommendations

OSHA PEL: TWA Total Dust: 10 mg/m3; Respirable Fraction: 5 mg/m3
ACGIH TLV: TWA 10 mg/m3 of total dust when toxic impurities are not present, e.g., quartz <1%

Specification

  Zinc stearate , with CAS number of 557-05-1, can be called Dermarone ; Dibasic zinc stearate ; Hidorin D 523 ; octadecanoic acid, zinc salt (2:1) ; Zinc dioctadecanoate . It is a white powder with fatty acid odour, Zinc stearate is non-flammable but combustible, be incompatible with oxidizing agents, dilute acids. Emits acrid smoke and fumes of ZnO when heated to decomposition. Zinc stearate (CAS NO.557-05-1) is used as a releasing agent and lubricant in the plastics and rubber industry, can also be used as follows: As a synergic stabilizer for Ba/Cd and Pb stabilizer systems, as a gloss imparting agent in paint industry, as a metal release agent in rubber, polyurethane and polyester processing system, as a die release agent in powder metallurgy, as a chief ingredient in "fanning powder", used by magicians performing card manipulation to decrease the friction between the cards and as a libricant in cosmetics to improve texture.