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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HCID 4635707Generated: October 25, 2026

1,3-dimethyl-1H-pyrazole-4-sulfonyl chloride

1,3-dimethylpyrazole-4-sulfonyl chloride · 1,3-dimethyl-4-pyrazolesulfonyl chloride · 1,3-Dimethyl-1H-pyrazol-4-sulfonyl chloride · 1H-Pyrazole-4-sulfonyl chloride, 1,3-dimethyl- · 1H-Pyrazole-4-sulfonylchloride,1,3-dimethyl-(9CI) · 1,3-Dimethyl-1H-pyrazole-4-sulfonyl chloride - [D94446] · 1,3-dimethyl-1H-pyrazole-4-sulfonyl chloride(SALTDATA: FREE)

https://huagongshe.com/en/chemical/4635707

1,3-dimethyl-1H-pyrazole-4-sulfonyl chloride molecular structure

Identifiers & Physical Properties

CAS No.89501-93-9
Molecular formulaC5H7ClN2O2S
Average molar mass194.64 g/mol
Monoisotopic mass193.99167614 g/mol
SMILESCc1nn(C)cc1S(=O)(=O)Cl
InChIKeyAFFSTQSBJFQGPY-UHFFFAOYSA-N
PubChem CID4635707
EC No.675-151-4
DTXSIDDTXSID30405049

Chemical & Physical Properties

XLogP0.7
Topological polar surface area60.3
Hydrogen bond donors0
Hydrogen bond acceptors3
Rotatable bonds1
Heavy atoms11
Formal charge0
Complexity235
Boiling point303.4±30.0 °C(Predicted)
Density1.52±0.1 g/cm3(Predicted)
Storage conditionsunder inert gas (nitrogen or Argon) at 2–8 °C
SolubilityChloroform (Slightly), Ethyl Acetate (Slightly)
Physical stateliquid
pKa (acidity coefficient)-2.86±0.10(Predicted)
ColorColourless
GHS pictogramGHS05,GHS07
Signal wordDanger
GHS hazard statementsH302-H314
GHS precautionary statementsP260-P264-P270-P280-P301+P312-P301+P330+P331-P303+P361+P353-P304+P340-P305+P351+P338-P310-P321-P330-P363-P405-P501
UN transport numberUN3265
Hazard classIRRITANT
Customs code2933199090
Limited quantities5.0 L (1.3 gallons) (liquid) or 5.0 kg (11 lbs) (solid)
Excepted quantitiesMax Inner Pack (30g or 30ml) and Max Outer Pack (1Kg or 1L)

Safety & Regulations

GHS classificationDangerH302 (66.7%): Harmful if swallowed [Warning Acute toxicity, oral]P260, P261, P264, P270, P271, P280, P301+P317, P301+P330+P331, P302+P361+P354, P304+P340, P305+P354+P338, P316, P319, P321, P330, P363, P403+P233, P405, and P501 (click each P-code to see the statement)Aggregated GHS information provided per 3 reports by companies from 3 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.
Hazard Classes and CategoriesAcute Tox. 4 (66.7%)
UN transport numberUN3265
Customs code2933199090
Signal wordDanger
GHS pictogramGHS05,GHS07
Hazard classIRRITANT
GHS hazard statementsH302-H314
Limited quantities5.0 L (1.3 gallons) (liquid) or 5.0 kg (11 lbs) (solid)
Excepted quantitiesMax Inner Pack (30g or 30ml) and Max Outer Pack (1Kg or 1L)
GHS precautionary statementsP260-P264-P270-P280-P301+P312-P301+P330+P331-P303+P361+P353-P304+P340-P305+P351+P338-P310-P321-P330-P363-P405-P501