2022.01.27
米国｜HCFO-1233ydや1234zd等に関する許容可能代替物質・用途を拡大へ（SNAPプログラム）
SNAPプログラム｜許容可能代替物質・用途拡大
2022年01月20日、オゾン層破壊防止のための施策の一つである「重要新規代替物質政策プログラム（SNAP）」のもとで、許容可能な代替物質とその用途を拡大する内容の規則が公布されました。本内容は同日より適用が開始されています。
今回焦点となっている代替物質は、次のものです。
■ HCFO-1233zd(E)
■ Blends of 10 to 90 percent HFO-1234ze(E) by weight and the remainder HCFO-1233zd(E)
■ Blends of 10 to 90 percent HFO-1234ze(E) by weight and the remainder HFC-152a
■ Blends of 0-100% HFO-1234ze(E), 0-70% Methyl Formate, 0-60% HFC-152a, 0-60% CO 2 and 0-60% Water
■ HCFO-1233yd(Z)
用途としては、冷凍・空調、発泡スチロール、エアゾール、洗浄溶剤、接着剤・コーティング・インクの各産業分野でのものが指定されています。
改正規則
改正規則は40 CFR Part 82の附表Aを改正するものとなります。以下、注釈は割愛しておりますので、詳細は改正規則原文をご参考ください。
冷蔵・冷凍および空調
| End-use | Substitute | Decision | Further information |
| Cold Storage Warehouses ( new equipment only ) | HCFO-1233zd(E) | Acceptable | HCFO-1233zd(E) is also known as trans -1-chloro-3,3,3-trifluoroprop-1-ene (Chemical Abstracts Service Registry Number [CAS Reg. No.] 102687-65-0). HCFO-1233zd(E) has an ozone depletion potential (ODP) of less than 0.0004 and a 100-year integrated global warming potential (GWP) of about 3.7. HCFO-1233zd(E) is nonflammable. The Workplace Environmental Exposure Limits (WEEL) committee of the Occupational Alliance for Risk Science (OARS) has established a WEEL of 800 ppm as an eight-hour time-weighted average (8-hr TWA) for HCFO-1233zd(E). |
| Ice Skating Rinks ( new equipment only ) | HCFO-1233zd(E) | Acceptable | HCFO-1233zd(E) is also known as trans -1-chloro-3,3,3-trifluoroprop-1-ene (CAS Reg. No. 102687-65-0). HCFO-1233zd(E) has an ODP of less than 0.0004 and a GWP of about 3.7. HCFO-1233zd(E) is nonflammable. OARS has established a WEEL of 800 ppm on an 8-hr TWA for HCFO-1233zd(E). |
| Industrial Process Air Conditioning ( new equipment only ) | HCFO-1233zd(E) | Acceptable | HCFO-1233zd(E) is also known as trans -1-chloro-3,3,3-trifluoroprop-1-ene (CAS Reg. No. 102687-65-0). HCFO-1233zd(E) has an ODP of less than 0.0004 and a GWP of about 3.7. HCFO-1233zd(E) is nonflammable. OARS has established a WEEL of 800 ppm on an 8-hr TWA for HCFO-1233zd(E). |
泡発泡剤
| End-use | Substitute | Decision | Further information |
| Extruded Polystyrene: Boardstock and Billet | Blends of 10 to 90 percent HFO-1234ze(E) by weight and the remainder HCFO-1233zd(E) | Acceptable | This substitute is blends of 10 to 90 percent HFO-1234ze(E) by weight and the remainder HCFO-1233zd(E). HFO-1234ze(E) is also called 1,3,3,3-tetrafluoropropene(E), or trans- 1,3,3,3-tetrafluoropropene (Chemical Abstracts Service Registry Number [CAS Reg. No.] 29118-24-9). HCFO-1233zd(E) is also called trans -1-chloro-3,3,3-trifluoro-prop-1-ene (CAS Reg. No. 102687-65-0). |
| HFO-1234ze(E) has a 100-year integrated global warming potential (GWP) of less than one. HCFO-1233zd(E) has an ozone depletion potential (ODP) of less than 0.0004 and a GWP of 3.7. The blends have an ODP ranging from less than 0.0004 to less than 0.00004 and range in GWP from about 1.3 to about 3.4. | |||
| HFO-1234ze(E) is not flammable at standard temperature and pressure, however, however, at higher temperatures, such as the temperatures typical for extruding extruded polystyrene: boardstock and billet (XPS), HFO-1234ze(E) may be flammable, particularly at higher humidity levels. HCFO-1233zd(E) is non-flammable. | |||
| The American Industrial Hygiene Association (AIHA) has established a Workplace Environmental Exposure Limit (WEEL) of 800 ppm as an eight-hour time-weighted average (8-hr TWA) for HFO-1234ze(E), and the Occupational Alliance for Risk Sciences (OARS) has established a WEEL of 800 ppm as an 8-hr TWA for HCFO-1233zd(E). | |||
| Extruded Polystyrene: Boardstock and Billet | Blends of 10 to 90 percent HFO-1234ze(E) by weight and the remainder HFC-152a | Acceptable | This substitute is blends of 10 to 90 Percent HFO-1234ze(E) by weight and the remainder HFC-152a. HFO-1234ze(E) is also called 1,3,3,3-tetrafluoropropene (E), or trans -1,3,3,3-tetrafluoropropene (CAS Reg. No. 29118-24-9). HFC-152a is also called 1,1-difluoroethane (CAS Reg. No. 75-37-6). The blend and its components have an ODP of zero. HFO-1234ze(E) has a GWP of less than one and HFC-152a has a GWP of 124. The blends range in GWP from about 13 to about 112. |
| HFO-1234ze(E) is not flammable at standard temperature and pressure, however, at higher temperatures, such as the temperatures typical for extruding XPS, HFO-1234ze(E) may be flammable, particularly at higher humidity levels. HFC-152a is flammable at standard temperature and pressure. | |||
| The AIHA has established a WEEL of 1,000 ppm for HFC-152a and a WEEL of 800 ppm for HFO-1234ze(E), both as an 8-hr TWA. | |||
| Extruded Polystyrene: Boardstock and Billet | Blends of 0-100% HFO-1234ze(E), 0-70% Methyl Formate, 0-60% HFC-152a, 0-60% CO 2 and 0-60% Water | Acceptable | This substitute is blends of 0-100% HFO-1234ze(E), 0-70% methyl formate, 0-60% HFC-152a, 0-60% CO 2 and 0-60% water. HFO-1234ze(E) is also called 1,3,3,3-tetrafluoropropene (E), or trans -1,3,3,3-tetrafluoropropene (CAS Reg. No. 29118-24-9). Methyl formate is also called methyl methanoate or formic acid, methyl ester (CAS Reg. No. 107-31-3). HFC-152a is also called 1,1-difluoroethane, has CAS Reg. No. 75-37-6. CO 2 has CAS Reg. No. 124-38-9, and water has CAS Reg. No. 7732-18-5. |
| HFO-1234ze(E) and water have GWPs of less than one, CO 2 has a GWP of one, methyl formate has a GWP of 11, and HFC-152a has a GWP of 124. The blends range in GWP from approximately one to 80. | |||
| HFO-1234ze(E) is not flammable at standard temperature and pressure; however, at higher temperatures, such as the temperatures typical for extruding XPS, HFO-1234ze(E) may be flammable, particularly at higher humidity levels. HFC-152a and methyl formate are flammable at standard temperature and pressure. | |||
| The AIHA has established a WEEL of 1,000 ppm for HFC-152a and a WEEL of 800 ppm for HFO-1234ze(E), both as an 8-hr TWA. |
洗浄剤
| End-use | Substitute | Decision | Further information |
| Electronics cleaning, metals cleaning, precision cleaning | HCFO-1233yd(Z) | Acceptable | HCFO-1233yd(Z) is also known as (Z)-1-chloro-2,3,3-trifluoropropene (CAS Reg. No. 1263679-68-0). HCFO-1233yd(Z) has an ozone depletion potential (ODP) of 0.00003 and a global warming potential (GWP) of less than 1. This compound is nonflammable. |
| The manufacturer recommends an acceptable exposure limit (AEL) for the workplace for HCFO-1233yd(Z) of 250 ppm on an eight-hour time-weighted average (8-hr TWA). | |||
| This substitute is subject to a Toxic Substances Control Act (TSCA) section 5(a)(2) Significant New Use Rule (SNUR). |
エアロゾル
| End-use | Substitute | Decision | Further information |
| Aerosol solvents | HCFO-1233yd(Z) | Acceptable | HCFO-1233yd(Z) is also known as (Z)-1-chloro-2,3,3-trifluoropropene (CAS Reg. No. 1263679-68-0). HCFO-1233yd(Z) has an ozone depleting potential (ODP) of 0.00003 and a global warming potential (GWP) of less than 1. This compound is nonflammable. |
| The manufacturer recommends an acceptable exposure limit (AEL) for the workplace for HCFO-1233yd(Z) of 250 ppm on an eight-hour time-weighted average (8-hr TWA). | |||
| This substitute is subject to a Toxic Substances Control Act (TSCA) section 5(a)(2) Significant New Use Rule (SNUR). |
接着剤、コーティング剤、インク
| End-use | Substitute | Decision | Further information 1 |
| Coatings | HCFO-1233yd(Z) | Acceptable | HCFO-1233yd(Z) is also known as (Z)-1-chloro-2,3,3-trifluoropropene (CAS Reg. No. 1263679-68-0). |
| HCFO-1233yd(Z) has an ozone depleting potential (ODP) of 0.00003 and a global warming potential (GWP) of less than 1. | |||
| This compound is nonflammable. | |||
| The manufacturer recommends an acceptable exposure limit (AEL) for the workplace for HCFO-1233yd(Z) of 250 ppm on an eight-hour time-weighted average (8-hr TWA). | |||
| This substitute is subject to a Toxic Substance Control Act (TSCA) section 5(a)(2) Significant New Use Rule (SNUR). |
■ 改正規則：
Protection of Stratospheric Ozone: Determination 37 for Significant New Alternatives Policy Program
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