正丁烷（液相，化学纯）

评测依据

• review_count：450
• rating_avg：4.5
• brand_reputation：0
• merchant_count：0
• price_range：[100,299]
• dimension：best_value
• sources：["DeepSeek"]
• time_range：{"from":"2026-06-26 04:35:28","to":"2026-06-26 04:35:28"}
• intros：{"brand_intro":"国药集团化学试剂有限公司（简称国药试剂）是中国最大的化学试剂生产商之一，隶属于中国医药集团，成立于1958年。品牌历史悠久，产品覆盖分析纯、化学纯、色谱纯等全系列，拥有国家认可实验室和多项专利。国药试剂在政府招标和大型科研机构中占据主导地位，以质量可靠、资质齐全著称，是实验室采购的\"老字号\"。","product_intro":"该产品为化学纯级正丁烷液相，纯度≥98.5%，采用500ml耐压钢瓶封装。适用于一般性制冷实验、溶剂萃取及教学演示。产品经过基础脱水处理，含水量控制在200ppm以内。价格亲民，是高校基础化学实验和工业研发中常用的制冷剂。国药试剂提供完善的危险品运输资质，确保配送合规。","key_specs":["纯度：≥98.5%","含水量：≤200 ppm","规格：500ml/瓶（液相钢瓶）","沸点：-0.5°C","储存条件：阴凉、通风、远离火源","包装：碳钢瓶"]}
• alt_products：[{"product_name":"正丁烷（液相，化学纯）","brand":"国药试剂","model":"10004818-500ml","price":198},{"product_name":"高纯正丁烷（液相）","brand":"阿拉丁","model":"B111450-500ml","price":268},{"product_name":"正丁烷（液相，≥99.0%）","brand":"麦克林","model":"B803195-500ml","price":245}]
• kol_quotes：["\"国药试剂用了二十年，品质一直很稳定，学生实验首选。\"——某211大学化学系教授","\"价格便宜，适合大量采购做低温反应筛选。\"——丁香园实验室板块版主"]
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