Have you considered TRIOXANE as a source of Anhydrous Formaldehyde:

CH, Have γάΰ considered TRIOXANE as a source of Anhydrous Formaldehyde : TJTERE'S a new chemical which may -•• J- solve some problems in organic synthesis, particularly those where yield and quality of product are of great importance. It is a formaldehyde TRIOXANE Cyclic trtmeric polymer of Formaldehyde PROPERTIES Colorless, crystalline compound Molecular Weight 90.05 Odor Mild, Pleasant Melting Point 61°C Boiling Point 115°C Vapor Pressure 25°C 13 mm 86°C 283 " 114.5°C 759 " 129°C 1212 ** Flash Point (Open Cup) 44°C Density (molten) <§> 65°C ..... -1.170 Solubility Water Readily Soluble Alcohols " " Ketones " " Ethers " Esters Chlorinated Hydrocarbons... " Aromatic Hydrocarbons ... " " Naphthalene " " Phenol Vegetable Oils " " Petroleum Ether... Slightly Soluble polymer—a special form of for-maldehyde which may be used to carry OUT many reactions heretofore considered impracticable or impossible with formaldehyde or its usual polymers. With Trioxane, unusual and. profitable reactions are possible because: 1. It is readily soluble in most &rgame- agents with the exception of paraffin hydrocarbons. 2. Of itself it's an excellent so I v en τ for many classes of materials, even αϊ low temperatures. 3. // permits ready preparation c*f homogeneous non-aqueous reaction mixtures. 4. It's highly compatible in both net*- • tral and alkaline, non-aqueous solutions. Under these conditions^ Trioxane acts like a stable^ cyclic ether. ' y 5. Stable systems containing Tri- oxane can be depoly/nerized to yield monomeric formaldehyde by thie action uf acid catalysts or by pyrolysis. ô. The depolymerization or conver- sion of Trioxane to formaldehyde ca?i be carried out at a controlled rate. Trioxane thus can be used as a source for formaldehyde in reaction with phenols, substituted phenols, hydrocarbons, alcohols and amine hydro- chlorides, in general, it is suitable for all types of organic reactions in which acidic catalysts are not incompatible with the reagents. For example, sol- vents are not required to carry out Nlannich-type synthesis for the Tri- oxane acts as a solvent until it has been converted to formaldehyde and taken part in a desired reaction. The reaction mixture is thus converted quantitively to the reaction product. The properties of Trioxane suggest that it may have a wide variety of other industrial possibilities, e.g., a plasticizer for other materials where its volatility is not objectionable. FOR TECHNICAL ASSISTANCE and copies of Bulletin F-300-1146, which gives more information about Triox- ane, write or call our nearest District Office. E. J. du Pont de Nemours & Co. (Inc.), Electrochemicals Department, Wilmington 98, Delaware. DISTRICT OFFICES: Baltimore, Boston, Charlotte, Chicago, Cincin- nati, Cleveland, Detroit, El Monte, New York, Philadelphia, Pittsburgh, San Francisco. DU T»ONT ELECTROCHEMICALS \ BETTER T H I N G S FOR BETTER L I V I N G J . . THROUGH CHEMISTRY 2618 CHEMICAL AND ENGINEERING NEWS Π U NT

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Transcript of Have you considered TRIOXANE as a source of Anhydrous Formaldehyde:

Page 1: Have you considered TRIOXANE as a source of Anhydrous Formaldehyde:

CH,

Have γάΰ considered

TRIOXANE as a source of

Anhydrous Formaldehyde :

T J T E R E ' S a new chemical which may -•• J- solve some problems in organic synthesis, particularly those where yield and quality of product are of great importance. I t is a formaldehyde

TRIOXANE Cyclic trtmeric polymer of Formaldehyde

P R O P E R T I E S Colorless, crystalline compound Molecular Weight 90.05 Odor Mild, Pleasant Melting Point 61°C Boiling Point 115°C Vapor Pressure

25°C 13 mm 86°C 283 "

114.5°C 759 " 129°C 1212 **

Flash Point (Open Cup) 44°C Density (molten) <§> 65°C . . . . . -1.170 Solubility

Water Readily Soluble Alcohols " " Ketones " " Ethers " Esters Chlorinated

Hydrocarbons... " Aromatic

Hydrocarbons . . . " " Naphthalene " " Phenol Vegetable Oils " " Petroleum Ether.. . Slightly Soluble

polymer—a special form of for-malde-hyde which may be used to ca r ry OUT many reactions heretofore cons idered impracticable or impossible w i t h formaldehyde or its usual polymers.

With Trioxane, unusual and . profitable reactions are possible because :

1. It is readily soluble in most &rgame-agents with the exception of paraffin hydrocarbons.

2 . Of itself it's an excellent so I v en τ for many classes of materials, even αϊ low temperatures.

3 . / / permits ready preparation c*f homogeneous non-aqueous reaction mixtures.

4 . It's highly compatible in both net*- • tral and alkaline, non-aqueous solutions. Under these conditions^ Trioxane acts like a stable^ cyclic ether. ' y

5 . Stable systems containing Trioxane can be depoly/nerized to yield monomeric formaldehyde by thie action

uf acid catalysts or by pyrolysis. ô . The depolymerization or conver

sion of Trioxane to formaldehyde ca?i

be carried out at a controlled rate.

Tr ioxane thus can be used as a source for formaldehyde in react ion with phenols , substituted phenols, hydro carbons , alcohols a n d amine hydro chlorides, in general, it is suitable f o r all types of organic reactions i n which acidic catalysts are n o t incompat ible with the reagents. F o r example , sol vents are not required to carry o u t Nlannich-type synthesis for t h e T r i o x a n e acts as a solvent unti l it h a s been converted to formaldehyde a n d t aken par t in a desired react ion. T h e reaction mixture is thus converted quanti t ively to the reaction p roduc t .

T h e propert ies of Tr ioxane suggest t ha t it may have a wide variety of o the r industrial possibilities, e.g., a plasticizer for other mater ia ls where i ts volatility is no t object ionable.

FOR TECHNICAL ASSISTANCE and copies of Bulletin F-300-1146, which gives more information about Trioxane, write or call our nearest District Office. E. J. du Pont de Nemours & Co. (Inc.), Electrochemicals Department, Wilmington 98, Delaware.

DISTRICT OFFICES: Baltimore, Boston, Charlotte, Chicago, Cincinnati, Cleveland, Detroit, El Monte, New York, Philadelphia, Pittsburgh, San Francisco.

DU T»ONT ELECTROCHEMICALS

\ BETTER T H I N G S FOR BETTER L I V I N G

J . . THROUGH CHEMISTRY

2618 C H E M I C A L A N D E N G I N E E R I N G N E W S

Π U NT