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Petrolatum

Summary Performance Uses Production Distinguishing test Toxicity Utilization limit Chemical properties Uses
Petrolatum
Petrolatum
CAS No.
8009-03-8
Chemical Name:
Petrolatum
Synonyms
WAX;perfecta;saxoline;VASELINE;PARAFFIN;PARAFIN;White 1S;Witcogel;FEMA 3216;WAX WHITE
CBNumber:
CB9854422
Molecular Formula:
N/A
Formula Weight:
0
MOL File:
Mol file

Petrolatum Properties

Melting point:
70-80 °C ((ASTM D 127))
Boiling point:
322 °C
Density 
0.84
refractive index 
n20/D 1.45
Flash point:
198 °C
form 
extra-low viscosity
color 
white
Stability:
Stable. Combustible. Incompatible with strong oxidizing agents.

SAFETY

Hazard Codes  T
Risk Statements  45
Safety Statements  24/25-45-53
WGK Germany  3
RTECS  RV0350000

Petrolatum Chemical Properties,Uses,Production

Summary

Petrolatum (Vaseline) is the malthenes purified from lubrication oil, the mixture of residue oil and cerate. It is an important lubricant for medicines, cosmetics, fine chemical raw materials and precision instruments. In China, major vaseline products include ordinary vaseline, industrial vaseline and medical vaseline. Ordinary vaseline is suitable for the preparation of various ointments and softener of dark rubber products; industrial vaseline can be used to protect metal products and general machinery parts against rust and lubricate machines under light loads, but also can be used as treating compound for leather and rubber softener. Vaseline products are mainly concentrated in the medicinal Vaseline, which is divided into two: medical white vaseline and medical yellow Vaseline. Medical Vaseline is mainly used in the preparation of ointment, skin protection cream and cosmetics raw materials, as well as antirust and lubricating materials for medical instruments and precision instruments.

Performance

White or yellow homogeneous paste, almost odorless and tasteless, a mixture of liquid and solid paraffin hydrocarbons. Relative density: 0.815~0.830, viscosity: 0.01 ~ 0.02 Pa•s (100℃), flash point > 190℃ (open type), drop point: about 37~54℃. It is easy to dissolve in ethyl ether, petroleum ether, fatty oil, benzene, carbon disulfide, chloroform and turpentine, difficult to dissolve in ethanol and almost insoluble in water. It is heated into a transparent liquid, which can be fluorescent in the dark after ultraviolet radiation.

Uses

With the characteristics of no color or smell, chemical inertness, semisolid, lipophilic property and good adhesion, it is suitable to manufacture substrates of hair cream, hair conditioner, eye cream, lipstick, wax matrix and so on. Medical petrolatum (vaseline) can be widely used as the matrix of ointment because it is almost compatible with all drugs without changes in drugs. Hydrophilic vaseline can be prepared by adding alcohols such as stearyl alcohol, cetyl alcohol and cholesterol after heated fusion and sufficient stir. Hydrophilic vaseline is an ointment base with strong permeability, stability and small stimulation. This ointment matrix can be used alone for dry skin rash, erythema, papules and other diseases, especially for the removal of blood scab and desquamation. Vaseline can also be used as a non-ionic emulsifier to be compatible with cholesterol, so the range of compatibility is very wide. In addition, it can be compatible with liquid drugs or aqueous solutions of drugs because of its absorbability. Industrial vaseline can be used as rubber softener, anti-rust of metal devices and raw material of rust proof grease.

Production

Acid-carclazyte method
Acid-carclazyte method is a traditional method for the production of petrolatum (vaseline), which is still in use at home and abroad. In the process, add sulfuric acid with more than 98% concentration measured up to about 60% of raw materials and mix it with the raw material in the reactor. The reaction temperature is kept at 70℃. After the reaction, the acid residue is separated and diluted with alcohol to further remove the acid residue. The oil treated with acid in another clay refining tank is decolorized with carclazyte at about 140℃, and then filtered to obtain the final product.
The characteristics of the acid-carclazyte method: the high-quality parts can be produced, PAHs can reach the level of pharmaceutical grade and other relevant indicators can meet the quality index of the pharmacopoeia, which is the reason of traditional craft’s long time existence. The main disadvantage of the method is too low goal product yield (about 50%) and a large number of acid residues which is difficult to be utilized resulting in serious environmental pollution and very high production cost.
Aluminum chloride method
Aluminum chloride method has taken place of acid-carclazyte method to produce vaseline from 60s at home. The process is as follows: the raw material reacts with aluminum chloride after dehydration in the reactor, reaction temperature is between 130℃ to 140℃. After the reaction, the oil will be neutralized and precipitated with alkali liquor in the neutralization tank. Then remove the slag and refine by carclazyte adsorption in the decolorizing tank. Vaseline product is obtained by filtering refined oil at about 120℃. The yield of aluminum chloride method is higher than that of acid-carclazyte method, and consumption index seems lower, but the quality is slightly worse; compared with vaseline produced by medium-pressure hydrocracking and high pressure hydrogenation was there is a great gap in color, transparency, the content of polycyclic aromatic hydrocarbons and so on.
Hydrogenation method
Hydrogenation method is a new process for the production of vaseline, which is usually carried out with 10, 20, or 30MPa and lower liquid hourly space velocity. The process is to convert the useless components in the raw materials into effective components, so that the product yield can be nearly 100%. But aluminum chloride method or acid-carclazyte method changes useless components into waste slags to dump containing effective components, which reduces the product yield. Due to the product yield, the refining extent of luminum chloride method or acid-carclazyte method is also limited, thus limiting the further improvement of product quality. So the hydrogenation method is better than aluminum chloride method and acid-carclazyte method both in product yield or quality.
Figure 1. Economic comparison in three kinds of vaseline production processes
Figure 2. Comparison in three wastes from three production processes of vaseline

Distinguishing test

Solubility: It is insoluble in water, easily soluble in carbon dioxide, soluble in ether and hexane (OT-42).

Toxicity

Safe for food (FDA, §172.880,2000).
ADI has not been stipulated (FAO/WHO, 2001).

Utilization limit

Baked food 0.15%; candy 0.2%; dehydrated fruits and vegetables 0.02%; solid protein 0.1%(FDA,§172.880,2000).

Chemical properties

A white, yellow or light amber semisolid fatty substance. Transparent when thin-layered, slightly fluorescent. Insoluble in water, almost insoluble in cold or hot ethanol and cold anhydrous ethanol. Soluble in ether, hexane and most volatile or non-volatile oil; easily soluble in benzene, carbon disulfide, chloroform and turpentine.

Uses

Defoamer; lubricant; release agent; protective coating.
The product is suitable for preparing ingredients of medicine ointment and skin protection cream. It can be used for the anticorrosion of mechanical equipments, metal and parts, especially precision instruments, medical equipment and other advanced products. It can be used as lubricating grease in anti-attrition parts of machines when the temperature is not high and the mechanical load is not large. It can be used as the ingredients of high-end cosmetics and other daily necessities, such as skin care cream, hair cream, lipstick pomade ,etc.

Chemical Properties

clear to white solid

General Description

Dark brown, green, amber or white odorless thick liquid. Floats on water.

Reactivity Profile

Petrolatum is unreactive in most circumstances.

Health Hazard

LIQUID: Irritating to eyes.

Fire Hazard

Combustible.

Petrolatum Preparation Products And Raw materials

Raw materials

Preparation Products


Petrolatum Suppliers

Global( 140)Suppliers
Supplier Tel Fax Email Country ProdList Advantage
Shenzhen Sendi Biotechnology Co.Ltd.
0755-23311925 18102838259
0755-23311925 Abel@chembj.com CHINA 3229 55
Henan Tianfu Chemical Co.,Ltd.
0371-55170693
0371-55170693 info@tianfuchem.com CHINA 20811 55
J & K SCIENTIFIC LTD. 400-666-7788 +86-10-82848833
+86-10-82849933 jkinfo@jkchemical.com;market6@jkchemical.com China 96820 76
Meryer (Shanghai) Chemical Technology Co., Ltd. +86-(0)21-61259100(Shanghai) +86-(0)755-86170099(ShenZhen) +86-(0)10-62670440(Beijing)
+86-(0)21-61259102(Shanghai) +86-(0)755-86170066(ShenZhen) +86-(0)10-88580358(Beijing) sh@meryer.com China 40398 62
Chengdu XiYa Chemical Technology Co., Ltd. 4008-626-111
028-84752058 sale@xiyashiji.com China 9742 57
BEST-REAGENT 028-85973071 028-85973075
028-85973075 service@best-reagent.com China 9966 57
Tianjin heowns Biochemical Technology Co., Ltd. 400 638 7771
sales@heowns.com China 14544 57
Maya High Purity Chemicals +86 (573) 82222445 (0)18006601000 QQ:452520369
+86 (573) 82222643 sales@maya-r.com China 11850 57
Spectrum Chemical Manufacturing Corp. 021-67601368,18616765336,QQ:3475911745
021-57711696 mkt@spectrumchina.net China 9824 60
Dalian Meilun Biotech Co., Ltd. 0411-66771943;0411-66771942
0411-66771945 sales@meilune.com China 4613 58

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