Methylacetylene (CAS No. 74-99-7) is supplied by Jinan Shenghe Chemical Co., Ltd. with a typical purity of 按批次COA提供(不公开发布). Main applications include Organic Chemicals. Bulk quantities are available with COA; purity and packaging are subject to batch COA and order confirmation.
Organic Chemicals
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The CAS number of Methylacetylene is 74-99-7.
Typical purity is 按批次COA提供(不公开发布), supplied in 按订单/批次确认(不公开发布), with COA provided.
Main applications include Organic Chemicals.
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Methylacetylene · CAS 74-99-7 · C3H4. UNII 086L40ET1B. Boiling Point: -10 °F at 760 mmHg (NIOSH, 2024); Boiling Point: -23.2 °C; Boiling Point: -10 °F.
| CAS Registry Number | 74-99-7 |
|---|---|
| PubChem CID | 6335 |
| Molecular formula | C3H4 |
| IUPAC name | prop-1-yne |
| UNII (FDA) | 086L40ET1B |
| Molecular Weight | 40.06 |
|---|---|
| XLogP3 | 0.9 |
| Hydrogen Bond Donor Count | 0 |
| Hydrogen Bond Acceptor Count | 0 |
| Rotatable Bond Count | 0 |
| Exact Mass | 40.0313001276 |
| Monoisotopic Mass | 40.0313001276 |
| Topological Polar Surface Area | 0 |
| Heavy Atom Count | 3 |
| Formal Charge | 0 |
| Boiling Point | -10 °F at 760 mmHg (NIOSH, 2024) |
|---|---|
| Boiling Point | -23.2 °C |
| Boiling Point | -10 °F |
| Boiling Point | -23.3 °C @760 [mm Hg] |
| Melting Point | -153 °F (NIOSH, 2024) |
| Melting Point | -102.7 °C |
| Melting Point | -153 °F |
| Solubility | In water, 3,640 mg/L at 25 °C |
| Density | 0.607 at 25 °C/4 °C |
| Density | .607 (p> 1 atm) |
| Reported hazard statements | H220 (98.8%), H280 (100%), H335 (52.9%), H336 (34.7%) |
|---|
H220 (98.8%): Extremely flammable gas [Danger Flammable gases]
H280 (100%): Contains gas under pressure; may explode if heated [Warning Gases under pressure]
Propyne; Methylacetylene; prop-1-yne; 1-PROPYNE; Allylene; 74-99-7; Methyl acetylene; Acetylene, methyl-; 086L40ET1B; DTXSID0026387; CHEBI:48086; RefChem:6178; DTXCID406387; 200-828-4; METHYLACETYLENE-D1; MFCD00036235
CAS 74-99-7; molecular formula C3H4; molecular weight — g/mol.
Propyne, Methylacetylene, prop-1-yne, 1-PROPYNE, Allylene, 74-99-7.
Hazard statements reported: H220, H280, H335, H336.
Boiling Point: -10 °F at 760 mmHg (NIOSH, 2024); Boiling Point: -23.2 °C; Boiling Point: -10 °F; Boiling Point: -23.3 °C @760 [mm Hg].
Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.
Supplier: Jinan Shenghe Chemical Co., Ltd. · Reply within one business day.