5,5-Dimethylhydantoin
- CAS No.
- 77-71-4
- Chemical Name:
- 5,5-Dimethylhydantoin
- Synonyms
- DMH;5,5-Dimethylimidazolidine-2,4-dione;DIMETHYLHYDANTOIN;T10;dantoindmh;5,5-DIMETHYL-2,4-IMIDAZOLIDINEDIONE;ADPRC1;t10[qr];nsc8652;dmh[qr]
- CBNumber:
- CB5277245
- Molecular Formula:
- C5H8N2O2
- Molecular Weight:
- 128.13
- MDL Number:
- MFCD00005266
- MOL File:
- 77-71-4.mol
| Product description | Number | Pack Size | Price |
| 5,5-Dimethylhydantoin 97% | D161403 | 100g | $29.4 |
| 5,5-Dimethylhydantoin 97% | D161403 | 1kg | $91.5 |
| 5,5-Dimethylhydantoin >98.0%(T) | D0739 | 25g | $16 |
| 5,5-Dimethylhydantoin >98.0%(T) | D0739 | 500g | $47 |
| 5,5-Dimethylhydantoin | D473300 | 100g | $135 |
| More product size | |||
| Melting point | 174-177 °C (lit.) |
|---|---|
| Boiling point | 237.54°C (rough estimate) |
| Density | 1.2864 (rough estimate) |
| refractive index | 1.4730 (estimate) |
| Flash point | 193°C |
| storage temp. | Sealed in dry,Room Temperature |
| solubility | H2O: 0.1 g/mL hot, clear |
| pka | pKa 8.1 (Uncertain) |
| form | Crystalline Powder or Crystals |
| color | White to off-white |
| Water Solubility | soluble |
| BRN | 2827 |
| Cosmetics Ingredients Functions |
HAIR CONDITIONING VISCOSITY CONTROLLING |
| InChI | 1S/C5H8N2O2/c1-5(2)3(8)6-4(9)7-5/h1-2H3,(H2,6,7,8,9) |
| InChIKey | YIROYDNZEPTFOL-UHFFFAOYSA-N |
| SMILES | CC1(C)NC(=O)NC1=O |
| LogP | -0.480 |
| CAS DataBase Reference | 77-71-4(CAS DataBase Reference) |
| EWG's Food Scores | 1 |
| FDA UNII | 34032MQ9RO |
| NIST Chemistry Reference | 2,4-Imidazolidinedione, 5,5-dimethyl-(77-71-4) |
| EPA Substance Registry System | 5,5-Dimethylhydantoin (77-71-4) |
| UNSPSC Code | 12352100 |
| NACRES | NA.22 |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |  GHS07 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Warning | |||||||||
| Hazard statements | H302-H317 | |||||||||
| Precautionary statements | P280 | |||||||||
| PPE | Eyeshields, Gloves, type N95 (US) | |||||||||
| Hazard Codes | Xi | |||||||||
| Risk Statements | 36/37/38 | |||||||||
| Safety Statements | 22-24/25-36/37-26 | |||||||||
| WGK Germany | 2 | |||||||||
| RTECS | MU0977000 | |||||||||
| TSCA | TSCA listed | |||||||||
| HS Code | 29332100 | |||||||||
| Storage Class | 11 - Combustible Solids | |||||||||
| Hazardous Substances Data | 77-71-4(Hazardous Substances Data) | |||||||||
| Toxicity | LD50 oral in rabbit: 12660mg/kg | |||||||||
| NFPA 704 |
|
5,5-Dimethylhydantoin price More Price(27)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich | D161403 | 5,5-Dimethylhydantoin 97% | 77-71-4 | 100g | $29.4 | 2025-07-31 | Buy |
| Sigma-Aldrich | D161403 | 5,5-Dimethylhydantoin 97% | 77-71-4 | 1kg | $91.5 | 2025-07-31 | Buy |
| TCI Chemical | D0739 | 5,5-Dimethylhydantoin >98.0%(T) | 77-71-4 | 25g | $16 | 2025-07-31 | Buy |
| TCI Chemical | D0739 | 5,5-Dimethylhydantoin >98.0%(T) | 77-71-4 | 500g | $47 | 2025-07-31 | Buy |
| TRC | D473300 | 5,5-Dimethylhydantoin | 77-71-4 | 100g | $135 | 2021-12-16 | Buy |
5,5-Dimethylhydantoin Chemical Properties,Uses,Production
Chemical Properties
white to off-white crystals or crystalline powder
Uses
5,5-Dimethylhydantoin is part of a group of hydantoin compounds that are being evaluated for their anticonvulsant and central nervous system antitumour properties.
Definition
ChEBI: 5,5-Dimethylhydantoin is an imidazolidine-2,4-dione.
Synthesis
a. Add 600-800 parts of ammonium bicarbonate and 500-700 parts of acetone cyanohydrin to water and stir to fully dissolve, and then seal it when heated to 10;
b. Then pass 30 to 50 parts of ammonia into the substance made by step a, slowly increase the temperature to 50 to 65 , constant temperature for 1 to 2 hours, and stirring;
c. The substance made by step b was heated to 7585, induced air for 3050 minutes, then cooled to room temperature and filtered, i.e., the crude dimethylhydantoin and the mother liquor were made;
d, the dimethylhydantoin crude product 950 to 1150 parts produced by step c is put into 150 to 300 parts of water and 700 to 900 parts of mother liquor mixture, stirring while putting, heating to 80 to 98 and then adding 3 to 8 parts of activated carbon, decoloration for 20 to 40 minutes, filtration to remove the activated carbon, and then cooled to crystallize, centrifugal filtration and drying, i.e., the finished product of dimethylhydantoin is produced.
Purification Methods
Crystallise the hydantoin from EtOH and sublime it in vacuo. [Beilstein 24 III/IV 1097.]
5,5-Dimethylhydantoin Preparation Products And Raw materials
| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| Hebei Chuanghai Biotechnology Co., Ltd | +8615350571055 | Sibel@chuanghaibio.com | China | 8753 | 58 |
| Hebei Chuanghai Biotechnology Co,.LTD | +86-86-13131128733 +8613131128733 | sales1@chuanghaibio.com | China | 5240 | 58 |
| Hebei Dangtong Import and export Co LTD | +86-86-4001020630 +8619831957301 | admin@hbdangtong.com | China | 999 | 58 |
| Hebei Fengjia New Material Co., Ltd | +86-0311-87836622 +86-18712993135 | sales01@tairunfaz.com | China | 8051 | 58 |
| Hebei Chuanghai Biotechnology Co., Ltd | +8615531151365 | mina@chuanghaibio.com | China | 18126 | 58 |
| ShenZhen H&D Pharmaceutical Technology Co., LTD | +8618627948422 | sale@hdimpurity.com | China | 3681 | 58 |
| Hebei Zhuanglai Chemical Trading Co.,Ltd | +8613343047651 | admin@zlchemi.com | China | 3692 | 58 |
| Shandong Deshang Chemical Co., Ltd. | +86-0531-8875-2665 +8613153039501 | info@deshangchem.com | China | 661 | 58 |
| HEBEI SHENGSUAN CHEMICAL INDUSTRY CO.,LTD | +86-15350851019; +8615350851019 | admin@86-ss.com | China | 999 | 58 |
| Henan Tianfu Chemical Co.,Ltd. | +86-0371-55170693 +86-19937530512 | info@tianfuchem.com | China | 21595 | 55 |
View Lastest Price from 5,5-Dimethylhydantoin manufacturers
| Image | Update time | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
|---|---|---|---|---|---|---|---|---|
 |
2026-03-04 | 5,5-Dimethylhydantoin
77-71-4
|
US $5.00 / kg | 1kg | ≥98% | 200mt/year | Jinan Finer Chemical Co., Ltd | |
 |
2026-03-04 | 5,5-Dimethylhydantoin
77-71-4
|
US $0.00 / KG | 25KG | 98%min | 30tons/month | WUHAN FORTUNA CHEMICAL CO., LTD | |
 |
2026-03-02 | Roxadustat Impurity 41 | US $0.00-0.00 / mg | 10mg | 98% | 500mg | ShenZhen H&D Pharmaceutical Technology Co., LTD |
-
- 5,5-Dimethylhydantoin
77-71-4
- US $5.00 / kg
- ≥98%
- Jinan Finer Chemical Co., Ltd
-
- 5,5-Dimethylhydantoin
77-71-4
- US $0.00 / KG
- 98%min
- WUHAN FORTUNA CHEMICAL CO., LTD
-
- Roxadustat Impurity 41
- US $0.00-0.00 / mg
- 98%
- ShenZhen H&D Pharmaceutical Technology Co., LTD
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