Claims
- 1. A crystalline hydrate of trisodium carboxy methoxy malonate having a copper K.alpha. X-ray diffraction pattern characterized by strong diffraction lines at the approximate values of the angle 2.theta.: 20.10.degree., 8.00.degree., 14.30.degree., 30.37.degree., 16.20.degree., 5.80.degree., 37.00.degree., and 10.00.degree., said values of the angle 2.theta. corresponding, respectively, to the values of interplanar spacing d: 4.414 A, 11.04 A, 6.188 A, 2.941 A, 5.467 A, 15.22 A, 2.428 A, and 8.838 A.
- 2. A method of making a crystalline hydrate of trisodium carboxy methoxy malonate having a copper K.alpha. X-ray diffraction pattern characterized by strong diffraction lines at the approximate values of the angle 2.theta.: 20.10.degree., 8.00.degree., 14.30.degree., 30.37.degree., 16.20.degree., 5.80.degree., 37.00.degree., and 10.00.degree., said values of the angle 2.theta. corresponding, respectively, to the values of interplanar spacing d: 4.414 A, 11.04 A, 6.188 A, 2.941 A, 5.467 A, 15.22 A, 2.428 A, and 8.838 A, said method comprising forming an aqueous solution of a mixture of from 80% to 98% by weight trisodium carboxymethoxy malonate and, correspondingly, from 20% to 2% sodium hydroxide and precipitating said crystalline hydrate from said solution.
CROSS REFERENCES TO RELATED APPLICATIONS
This application is a continuation-in-part of U.S. application Ser. No. 468,713 filed May 10, 1974, now abandoned.
US Referenced Citations (4)
Number |
Name |
Date |
Kind |
3821296 |
Blumbergs et al. |
Jun 1974 |
|
3904684 |
Tsuda et al. |
Sep 1975 |
|
3914297 |
Lamberti et al. |
Oct 1975 |
|
3925465 |
Nara et al. |
Dec 1975 |
|
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
468713 |
May 1974 |
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