O-Methylisourea hydrogen sulfate
Also known as: Methyl carbamimidate sulfate (1:1), O-Methylisourea bisulfate, O-Methylisourea sulfate (1:1), OMI hydrogen sulfate, 2-Methylpseudourea monosulfate, Carbamimidic acid, methyl ester, sulfate (1:1)
O-Methylisourea hydrogen sulfate (CAS 29427-58-5) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C2H8N2O5S and a molecular weight of 172.160 g/mol. Key properties include a melting point of 118-120 °C(lit.), a boiling point of 66.9ºC at 760mmHg and a flash point of 165.7ºC. It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation, H319 — Causes serious eye irritation and H335 — May cause respiratory irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 29427-58-5
- Jingsj CID
- J-9800-0
- Molecular Formula
- C2H8N2O5S
- Molecular Weight
- 172.160 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 118-120 °C(lit.) |
|---|---|
| Boiling Point | 66.9ºC at 760mmHg |
| Flash Point | 165.7ºC |
| Exact Mass | 172.015396 |
| PSA | 142.08000 |
| LogP | 0.75430 |
GHS Safety & Compliance
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
Customs & Trade Information
| HS Code | 2925290090 |
|---|---|
| Summary | 2925290090 other imines and their derivatives; salts thereof。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:6.5%。General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of O-Methylisourea hydrogen sulfate?
The CAS number of O-Methylisourea hydrogen sulfate is 29427-58-5.
What are the molecular formula and molecular weight of O-Methylisourea hydrogen sulfate?
O-Methylisourea hydrogen sulfate has molecular formula C2H8N2O5S and molecular weight 172.160 g/mol.
Is O-Methylisourea hydrogen sulfate hazardous?
O-Methylisourea hydrogen sulfate has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H335 — May cause respiratory irritation.
What are the upstream and downstream products of O-Methylisourea hydrogen sulfate?
For O-Methylisourea hydrogen sulfate, Upstream Products: Methanol, Cyanamide, Urea; Downstream Products: 2-Methoxy-6-methyl-4(1H)-pyrimidinone, 2-Methoxypyrimidine-5-carbaldehyde, Methylurea.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "O-Methylisourea hydrogen sulfate (CAS 29427-58-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-9800-0 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.