Selected product / Technical profile
HONGKUN / PRODUCT DIRECTORY吡唑
Selected product / Technical reference精选产品 / 技术档案
A compact nitrogen heterocycle for synthetic building blocks and coordination chemistry.
面向有机合成砌块与配位化学的含氮杂环原料
Define the assay method, water requirement and intended coupling or coordination system when selecting a pyrazole grade.
根据拟用偶联反应或配位体系，明确吡唑的含量检测方法、水分和相关杂质要求。
Match the CAS number and exact chemical form before comparing grades.
比较不同等级之前，先核对 CAS 与具体化学形态
| Parameter参数 | Value参数值 |
|---|---|
| CAS numberCAS 编号 | 288-13-1288-13-1 |
| Systematic name系统名称 | 1H-Pyrazole1H-Pyrazole |
| Molecular formula分子式 | C3H4N2C3H4N2 |
| Molar mass摩尔质量 | 68.08 g/mol68.08 g/mol |
| Reported synonyms已列别名 | 1,2-Diazole; Pyrazole1,2-Diazole; Pyrazole |
| EC numberEC 编号 | 206-017-1206-017-1 |
| MDL numberMDL 编号 | MFCD00005234MFCD00005234 |
| PubChem CIDPubChem CID | 10481048 |
| InChIKeyInChIKey | WTKZEGDFNFYCGP-UHFFFAOYSA-NWTKZEGDFNFYCGP-UHFFFAOYSA-N |
| SMILESSMILES | c1cn[nH]c1c1cn[nH]c1 |
Values retain their published units and stated test conditions.
数值保留公开来源的单位与测试条件
| Parameter参数 | Value参数值 | Condition / context条件 / 说明 |
|---|---|---|
| Physical state物理状态 | Solid固体 | 20 °C20 °C |
| Melting range熔点范围 | 67–70 °C67–70 °C | Literature range reported for P56607P56607 产品页所列文献范围 |
| Boiling range沸点范围 | 186–188 °C186–188 °C | Literature range; pressure not stated文献范围；页面未注明压力 |
| Density密度 | 1.209 g/cm³1.209 g/cm³ | 20 °C; OECD 10920 °C；OECD 109 |
| Water solubility水中溶解度 | 1,000 g/L1,000 g/L | SDS reference; temperature not statedSDS 参考值；未注明温度 |
| Vapour pressure蒸气压 | 0.21 hPa0.21 hPa | 20 °C; OECD 10420 °C；OECD 104 |
| Partition coefficient分配系数 | log Pow = 0.33log Pow = 0.33 | 25 °C; pH 7; OECD 11725 °C；pH 7；OECD 117 |
Published specifications describe the cited supplier's example grade and support comparison. They are not a Hongkun specification or quotation.
以下公开规格对应来源供应商的示例等级，可用于比较，不属于鸿坤质量标准或报价
| Parameter参数 | Value参数值 | Method / grade context方法 / 等级说明 |
|---|---|---|
| Appearance外观 | White to almost white powder or crystals白色至类白色粉末或晶体 | TCI P0546 published specificationTCI P0546 公开规格 |
| Purity by GCGC 纯度 | ≥98.0%≥98.0% | TCI P0546; gas chromatographyTCI P0546；气相色谱 |
| Assay by titration滴定含量 | ≥98.0%≥98.0% | TCI P0546; nonaqueous titrationTCI P0546；非水滴定 |
| Melting-point specification熔点规格 | 67.0–71.0 °C67.0–71.0 °C | TCI P0546 published acceptance rangeTCI P0546 公开验收范围 |
Use the referenced application context to prepare your specification.
结合有来源的应用信息准备技术规格
The five-membered ring contains two adjacent nitrogen atoms. Pyrazole is used as a starting building block for organic synthesis; the required grade depends on the downstream chemistry.
五元环中含有两个相邻氮原子，可作为有机合成的基础砌块；应根据下游反应需求确定适用等级。
Pyrazole is reported as a ligand for organometallic compounds. Confirm identity and trace impurities when evaluating it for a coordination system.
吡唑被用于有机金属配合物的配体研究。评估配位体系适用性时，建议核查结构身份与微量杂质。
The notes below summarize the cited references. Obtain the current SDS for the actual supplier, grade and destination before planning handling or shipment.
以下内容汇总所引资料。安排操作或运输前，请取得实际供应商、等级及目的地适用的最新 SDS
TCI flags moisture and air sensitivity and recommends an inert atmosphere, with cool, dark storage below 15 °C. Confirm storage requirements on the offered product label.
TCI 提示该产品吸湿、对空气敏感，建议惰性气氛储存，置于低于 15 °C 的阴凉避光处。实际储存要求应核对拟供产品标签。
The P56607 SDS identifies skin toxicity, serious eye damage and repeated-exposure organ hazards. Avoid dust and contact; use ventilation and SDS-specified protection.
P56607 的 SDS 列有皮肤接触毒性、严重眼损伤及反复暴露器官危害。应避免粉尘与直接接触，落实通风及 SDS 规定的防护。
The P56607 SDS lists UN 2811, class 6.1, packing group III for IATA and IMDG. Confirm classification for the actual material, packaging and destination before shipment.
P56607 的 SDS 对空运与海运列示 UN 2811、第 6.1 类、包装类别 III。发运前应按实际物料、包装与目的地确认运输分类。
Confirm these points before approving a sample or supply route.
样品或供货路线确认前，建议核对以下事项
Match CAS 288-13-1 and the analytical identity record. Distinguish the parent pyrazole from substituted pyrazoles or salts.
核对 CAS 288-13-1 与身份鉴别资料，区分母体吡唑、取代吡唑及其盐类。
State whether your acceptance criterion uses GC or titration. Request the proposed impurity profile and a batch-specific COA.
明确采用 GC 还是滴定结果作为验收依据，并要求提供拟供产品杂质谱与对应批次 COA。
Set a water-content limit and test method if your process is moisture-sensitive. Discuss protective packaging and sampling practices.
如工艺对水敏感，请提出水分限度与检测方法，并沟通防潮包装和取样要求。
Include quantity, packaging, destination and delivery timing in the enquiry. Review the current SDS and agreed specification alongside the quotation.
询价时提供数量、包装、目的地与交期，并结合报价核查最新版 SDS 及双方确认的质量规格。
03 / Build your specification
These details help compare supply options on the same basis. Start with what you know; mark the remaining requirements for discussion.
Confirm CAS 288-13-1, the required chemical form and any grade or stereochemical requirements. Attach your specification if you have one.
State the required assay, analytical method and relevant impurity limits. Identify any tests or documents needed before sample approval.
Provide the trial quantity, expected production demand and whether the request is for a sample, qualification project or repeat order.
Include the delivery country, preferred packaging, required date and delivery terms so freight and documentation can be reviewed together.
04 / Quality & delivery
Request a COA, current SDS and relevant technical data, specifying whether you need an example or documents for a proposed batch. Agree the manufacturer, grade and document scope during the sourcing review.
No document files are attached to this catalogue record. Availability requires confirmation.
Packaging format, net weight, container compatibility and labeling are confirmed for the selected grade and shipment.
Request storage and handling conditions from the applicable SDS. Transport classification and any temperature controls require confirmation for the proposed shipment.
Agree the specification version, test methods and acceptance criteria first. Ask how the sample relates to the proposed manufacturer, grade and production batch, and record which documents will accompany the shipment.
Submit the required grade, quantity and destination. Commercial terms, current availability and delivery timing are assessed for that inquiry and confirmed in the quotation; catalogue inclusion does not establish stock or a delivery commitment.