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| CAS号 : | 75-10-5 |
精确质量 : | 52.01250 |
| 分子式 : | CH2F2 |
logP : | 0.88290 |
| 分子量 : | 52.02340 |
PSA : | 0.00000 |
二氟甲烷 | |
difluoromethane | |
75-10-5 | |
CH2F2 | |
52.02340 | |
0.00000 | |
0.88290 | |
52.01250 |
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1.195
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无色气体
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−51.6 °C(lit.)
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−136 °C(lit.)
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1.1 g/mL at 25 °C(lit.)
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Stable at normal temperatures and pressure.
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Grounding and bonding required. Store in a tightly closed container. Store below 49 C. Store in a cool, dry place. Store in a well-ventilated area. Keep separated from incompatible substances.
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PA8537500
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2.1
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1
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S9-S16-S33
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UN 3252 2.1
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2903399090
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F
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R11
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品名, 成分含量, 用途 |
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2903399090. 其他无环烃的氟化、溴化或碘化衍生物. 增值税率:17.0%. 退税率:13.0%. 监管条件:无. 最惠国关税:5.5%. 普通关税:30.0% |
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2903399090. brominated,fluorinated or iodinated derivatives of acyclic hydrocarbons. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:5.5%. General tariff:30.0% |
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HS:2903399090.Fluorinated or iodinated derivatives of acyclic hydrocarbons. General tariff:0 |
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①天然气氟化,CH4+2F2→CH2F2+2HF。 ②氟甲烷氟化CH3F+F2→CH2F2+HF。 | |
作制冷剂、干刻剂 |
