JPH0253425B2 - - Google Patents
Info
- Publication number
- JPH0253425B2 JPH0253425B2 JP3511283A JP3511283A JPH0253425B2 JP H0253425 B2 JPH0253425 B2 JP H0253425B2 JP 3511283 A JP3511283 A JP 3511283A JP 3511283 A JP3511283 A JP 3511283A JP H0253425 B2 JPH0253425 B2 JP H0253425B2
- Authority
- JP
- Japan
- Prior art keywords
- glyoxylic
- temperature
- anhydride
- glyoxylic acid
- crystals
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- HHLFWLYXYJOTON-UHFFFAOYSA-N glyoxylic acid Chemical compound OC(=O)C=O HHLFWLYXYJOTON-UHFFFAOYSA-N 0.000 claims description 28
- BHVICADLOSIXKE-UHFFFAOYSA-N oxaldehydoyl 2-oxoacetate Chemical compound O=CC(=O)OC(=O)C=O BHVICADLOSIXKE-UHFFFAOYSA-N 0.000 claims description 13
- 238000003756 stirring Methods 0.000 claims description 9
- 239000007864 aqueous solution Substances 0.000 claims description 7
- 239000000155 melt Substances 0.000 claims description 6
- 239000000843 powder Substances 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 239000013078 crystal Substances 0.000 description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 239000000203 mixture Substances 0.000 description 7
- 238000002425 crystallisation Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000008025 crystallization Effects 0.000 description 5
- 238000002844 melting Methods 0.000 description 5
- 230000008018 melting Effects 0.000 description 5
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 3
- 150000008064 anhydrides Chemical class 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- MOOYVEVEDVVKGD-UHFFFAOYSA-N oxaldehydic acid;hydrate Chemical compound O.OC(=O)C=O MOOYVEVEDVVKGD-UHFFFAOYSA-N 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- QBYIENPQHBMVBV-HFEGYEGKSA-N (2R)-2-hydroxy-2-phenylacetic acid Chemical compound O[C@@H](C(O)=O)c1ccccc1.O[C@@H](C(O)=O)c1ccccc1 QBYIENPQHBMVBV-HFEGYEGKSA-N 0.000 description 1
- IWYDHOAUDWTVEP-UHFFFAOYSA-N R-2-phenyl-2-hydroxyacetic acid Natural products OC(=O)C(O)C1=CC=CC=C1 IWYDHOAUDWTVEP-UHFFFAOYSA-N 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- LEQAOMBKQFMDFZ-UHFFFAOYSA-N glyoxal Chemical compound O=CC=O LEQAOMBKQFMDFZ-UHFFFAOYSA-N 0.000 description 1
- 229940015043 glyoxal Drugs 0.000 description 1
- 150000004677 hydrates Chemical class 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229960002510 mandelic acid Drugs 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 150000004682 monohydrates Chemical class 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3511283A JPS59161329A (ja) | 1983-03-02 | 1983-03-02 | 粉末状のグリオキシル酸無水物の製造法 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3511283A JPS59161329A (ja) | 1983-03-02 | 1983-03-02 | 粉末状のグリオキシル酸無水物の製造法 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59161329A JPS59161329A (ja) | 1984-09-12 |
| JPH0253425B2 true JPH0253425B2 (enrdf_load_stackoverflow) | 1990-11-16 |
Family
ID=12432847
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3511283A Granted JPS59161329A (ja) | 1983-03-02 | 1983-03-02 | 粉末状のグリオキシル酸無水物の製造法 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59161329A (enrdf_load_stackoverflow) |
-
1983
- 1983-03-02 JP JP3511283A patent/JPS59161329A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59161329A (ja) | 1984-09-12 |
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