HAVE
You Investigated
the Possibilities of the
ALKYL PHOSPHORIC ACIDS? Here is a n o t h e r g r o u p of organic p h o s p h o r u s compounds that offer interesting possibilities for further chemical research. Already many i m p o r t a n t applications have b e e n suggested . . . a m o n g them those indicated in the adjoining column. Properties of the Alkyl Phosphoric Acids . . . summarized in the table below . . . h a v e b e e n carefully checked by Victor re search chemists. A f e w of t h e compounds are in commercial production for war purposes. Because of present limitations in the supply of certain critical materials, it is n o t possible to s u b m i t samples of all products listed. W h e r e available, however, they will b e gladly sent u p o n request. PROPERTIES OF
Typical Uses f o r Alkyl Phosphoric Acids C a t a l y s t s for the hardening of urea-formaldehyde resins. Accelerators
for shortening baking schedules and lowering baking temperatures.
Anti-corrosive a g e n t s (used a l o n e or dissolved in oils or solvents)-minimize corrosion of alloy bearings w h e n added to lubricants. Also aid i n preventing break-down of lubricants u n d e r h i g h bearing pressures. Soldering fluxes—eliminate obnoxious fumes and corrosive residues, r e d u c e spattering. Definite advantages gained in welding zinc, magnesium, a n d alum i n u m . M e t a l cleaners—combine grcasc-solvcnt power with rust inhibition. ALKYL
PHOSPHORIC
ACIDS
Decomp. Point
Mol. Wt.
S p . Gr. a t
Ref. Index
x°/4° C
"D
A c i d O r t h o p h o s p h a t e s , R2HPO4 Dimethyl— Diethyl— Ethyl i - a m y l — Ethyl o c t y l — Ethyl c a p r y l — Dibutyl— Butyl a m y l —
Af
Bf
Cf
Df
126 1 54 1 96 238 233 210 224
1.335(25) 1.186 (25) 1.071 (25) 1.028(25) 1.016(30) 1.057(25) 1.037(25)
1.408 1.417 1.421 1.433 1.430 1.428 1.428
172-76 >175 >175 >175 167-71 >175 >175
S S I 1 I I PS
S S S S S S S
S S S S S S S
I
Acid Orthophosphates, RH2P04 Monomethyl— Monoethyl— Mono i-propyl— Mono n-propyl— Mono n-butyl— Mono i-amyl— Mono octyl— Mono capryl—
Ί12 126 1 40 1 40 1 54 1 68 210 210
1.511 (25) 1.430(25) 1.291 (30) 1.331 (30) 1.18 (25) 1.142 (25) 1.066 (25) 1.092 (25)
1.420 1.427 1.426 1.427 1.429 1.432 1.444 1.437
169-73 165-70 74-80 122-28 105-10 160-70 170-75 100-10
s s s s s
S S S S S S S S
SS S
I I I
S S S S S S S S
206 234 262 262 290 318 402 -402
1.562 (25) 1.507(25) 1.351 (25) 1.374 (25) 1.228 (25) 1.149(25) 1.094(25) 1.098 (25)
1.425 1.437 1.433 1.441 1.431 1.432 1.448 1.442
197-200 141-46 75-80 96-100 165-69 164-68 151-53 98-103
SR SR SR SR SR R R R
SR SR SR SR SR SR SR SR
SS S S S S S
I I S SS S S S
586 656 726 796 866 1 076 1 076
1.64 (25) 1.50 (25) 1.405 (25) 1.309(^5) 1.233 (25) 1.123 (30) 1.125 (25)
1.435 1.436 1.439 1.442 1.438 1.450 1.445
>175 109-14 58-63 115-20 123-28 125-30 73-78
SR SR SR SR SS R R
SR SR SR SR SR SR SR
s s s s s s s
380
1.694(25) 1.558 (25) 1.455(30) 1.320(30) 1.31 (25) 1.164(25) 1.187(25)
1.440 1.436 1.440 1.435 1.442 1.444 1.448
>175 138-43 55-60 135-40 114-20 117-20
SR SR SR SR SR SR SR
SR SR SR SR SR SR SR
PS PS
COMPOUND
A c i d P y r o p h o s p h a t e s , R2H2P2O7 Dimethyl— Diethyl— Di i - p r o p y l — Di n - p r o p y l — Di n - b u t y l — Di i - a m y l — Dioctyl— Dicapryl— A c i d T r i p o l y p h o s p h a t e s , R5H5P6O20 Pentamethyl— Pentaethyl— **Penta i-propyl— Penta n - b u t y l — Penta i - a m y l — Fenta o c t y l — **Penta capryl— A c i d T e t r a p o l y p h o s p h a t e s , R3H3P4O13 Trimethyl—
.
Triethyl—
422
**Tri i-propyl— Tri n - b u t y l — Tri i - a m y l — Tri o c t y l — **Tricapryl—
464 506 548 674 674
SOLUBILITY*
°C.
65-70
s s
s s s s s
Ef
Ft
s s s s s s
s S S
s
Of
I PS S S S S S
s s SS s s s s
I I I I SS S
S 3 SS I SS SS
s s
S S
I I I
I I I S
s I I SS
s
I
s s s
s s
I I I PS
I I I
I I I I
s s
SS
s s
S
s s
PS
s s s
s s
I I I PS I
I SS I
S SS
SS
S
I I I I I
s SS
s s
s
s SS
* S = S o l u b l e , PS = P a r t i a l l y s o l u b l e , SS = S p a r i n g l y s o l u b l e , I = Insoluble, R = Reacts, SR = S o l u b l e a n d reacts. **Unstable A t — W a t e r , Bf—Alcohol, Ct—Acetone, Dt—Ether, Ef—Toluene, F t — C C I 4 , Gt—Naphtha.
VICTOR Chemical Words H E A D Q U A R T E R S
FOR
P H O S P H A T E S
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FORMATES
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O X A L A T E S
141 W. JACKSON BLVD., CHICAGO, ILL, NEW YORK, N. Y., KANSAS CITY, MO., ST. LOUIS, M O - , NASHVILLE, TENN., GREENSBORO, N . C. PLANTS: NASHVILLE, TENN., MT. PLEASANT, TENN., CHICAGO HEIGHTS, ILL
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