melem
- CAS NO.:1502-47-2
- Empirical Formula: C6H6N10
- Molecular Weight: 218.18
- MDL number: MFCD00767872
- EINECS: 216-122-4
- SAFETY DATA SHEET (SDS)
- Update Date: 2023-05-04 17:34:33
What is melem?
The Uses of melem
1,3,4,6,7,9,9b-heptaazaphenalene-2,5,8-triamine can be used as organic synthesis intermediate and pharmaceutical intermediate, mainly used in laboratory research and development process and chemical production process.
Definition
ChEBI: Melem is a heptaazaphenalene.
Flammability and Explosibility
Not classified
Synthesis
Melem 4e was synthesized by heating cyanamide 5 (Fluka, ≥98%) or ammonium dicyanamide 6 (for preparation, see ref 24) or dicyandiamide 7 (Avocado, 99%) or melamine 1a (Fluka, purum, ≥99% (NT)). The commercial products were used as purchased: 80 mg of starting material (1.90 mmol of 5, 0.95 mmol of 6, 0.95 mmol of 7, or 0.63 mmol of 1a, respectively) was filled into a glass ampule (outer diameter, 16 mm; inner diameter, 12 mm). The ampule was sealed at a length of 120 mm and heated to 450 °C (heating rate: 1 °C min-1). After about 5 h at this temperature, the ampule was slowly (2 °C min-1) cooled to room temperature. After the ampule was opened, the typical smell of ammonia was detected. At the top of the ampule, colorless crystals were found which were identified by X-ray powder diffractometry as sublimated melamine. At the bottom, a white-beige powder containing melem was isolated. Melem C6N7(NH2)3. yield 60%. Anal. calcd for melem: H, 2.75; C, 33.03; N, 64.22. Found: H, 2.98; C, 32.62; N, 62.04.
Properties of melem
Boiling point: | 348.86°C (rough estimate) |
Density | 1.6205 (rough estimate) |
vapor pressure | 0Pa at 20℃ |
refractive index | 1.9320 (estimate) |
pka | -0.74±0.20(Predicted) |
Water Solubility | 930μg/L at 20℃ |
Safety information for melem
Signal word | Warning |
Pictogram(s) |
Exclamation Mark Irritant GHS07 |
GHS Hazard Statements |
H302:Acute toxicity,oral H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation |
Precautionary Statement Codes |
P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P264:Wash hands thoroughly after handling. P264:Wash skin thouroughly after handling. P270:Do not eat, drink or smoke when using this product. P271:Use only outdoors or in a well-ventilated area. P280:Wear protective gloves/protective clothing/eye protection/face protection. P330:Rinse mouth. P362:Take off contaminated clothing and wash before reuse. P301+P312:IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell. P302+P352:IF ON SKIN: wash with plenty of soap and water. P304+P340:IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. P332+P313:IF SKIN irritation occurs: Get medical advice/attention. P337+P313:IF eye irritation persists: Get medical advice/attention. P405:Store locked up. P403+P233:Store in a well-ventilated place. Keep container tightly closed. P501:Dispose of contents/container to..… |
Computed Descriptors for melem
New Products
(R)-3-Aminobutanenitrile Hydrochloride 4-Aminotetrahydropyran-4-carbonitrile Hydrochloride 4-AMINO-TETRAHYDRO-PYRAN-4-CARBOXYLIC ACID HCL 4-AMINO-TETRAHYDRO-PYRAN-4-CARBOXYLIC ACID 1,4-Dioxa-8-azaspiro[4.5]decane 5-Bromo-2-nitropyridine SODIUM AAS SOLUTION ZINC AAS SOLUTION BUFFER SOLUTION PH 10.0(BORATE) GOOCH CRUCIBLE SINTERED AQUANIL 5 BERYLLIUM AAS SOLUTION XANTHAN GUM Racecadotril SODIUM VALPROATE Diclofenac Sodium Methylcobalamin (vitamin B12) SODIUM METHYL PARABEN Folic Acid Impurity G Dabigatran Acyl-O2-D-Glucuronide Trifluoroacetic Acid Salt Glycopyrronium Bromide EP Impurity I Eltrombopag N-Oxide Impurity Di-Nitroso Acyclovir Impurity K DLRD N-OxideRelated products of tetrahydrofuran
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