標準編號:	GBZ 2.1-2019
中文名稱:	工作場所有害因素職業接觸限值 第1部分：化學有害因素
英文名稱:	Occupational exposure limits for hazardous agents in the workplace— Part 1: Chemical hazardous agents
中標分類:	C52    勞動衛生
行業分類:	GB    國家標準
ICS分類:	13.100 13.100    職業安全、工業衛生 13.100
發布機構:	國家衛生健康委員會
發布日期:	2019-08-27
實施日期:	2020-4-1
標準狀態:	superseded
被新標準替代:	GBZ 2.1-2019/XG1-2022 《工作場所有害因素職業接觸限值 第1部分:化學有害因素》行業標準第1號修改單 GBZ 2.1-2019/XG2-2024 《工作場所有害因素職業接觸限值 第1部分:化學有害因素》行業標準第2號修改單
被替代日期:	2025-5-1
替代舊標準:	GBZ 2.1-2007 工作場所有害因素職業接觸限值 第1部分:化學有害因素
翻譯語言:	英文
文件格式:	PDF
中文字符數:	43000 字
翻譯價格(元):	3600.0
交付時間:	付款后 1 個工作日

Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative. The occupational exposure limits given in Tables 1 to 3 in the text of this standard are compulsory, while the rest and those given in Table 4 are recommendatory. This standard is developed in accordance with Law of the People's Republic of China on Prevention and Control of Occupational Diseases. GBZ 2 Occupational exposure limits for hazardous agents in the workplace consists of the following two parts under the general title: ——Part 1: Chemical hazardous agents; ——Part 2: Physical agents. This part is Part 1 of GBZ 2. This part is developed in accordance with the rules given in GB/T 1.1-2009. This part replaces GBZ 2.1-2007 Occupational exposure limits for hazardous agents in the workplace - Part1: Chemical hazardous agents. In addition to editorial changes, the following main technical changes have been made with respect to GBZ 2.1-2007. ——six normative references, i.e., GBZ/T 300, GBZ/T 192, GBZ/T 295, GBZ/T 224, GBZ/T 225 and GBZ/T 229.2, are added; ——nine concepts or definitions with regard to occupational exposure are added, terms in five normative references are deleted, and PE is introduced to replace the excursion limits; ——occupational exposure limits for 28 chemical hazardous agents that has been developed and revised in recent years are summarized and added. ——Chinese or English names and CAS Nos of eight chemical substances are adjusted; ——sensitization labels for 16 substances, skin labels for four substances, and carcinogenicity labels for 14 substances are added, and carcinogenicity labels for seven substances are adjusted; ——exposure limits for nitric oxide are incorporated into those for nitrogen dioxide; ——adverse health effects that are based during establishment of the exposure limits are clearly listed; ——biological limit values for occupational exposure (biological monitoring indexes and exposure limits) are added in Clause 4 “hygienic requirements”, and the released standard biological limit values for occupational exposure in the health industry and their determination methods are confirmed, and 28 biological monitoring indices and exposure limits are summarized and listed. 13 biological limit values for occupational exposure approved in recent years as well as quality requirements for biological material determination and biological monitoring are added; ——relevant requirements for monitoring and determination methods are further improved. For PC-TWA of total dust and respirable dust, it is specified that priority is given to the determination of TWA of the respirable dust; ——control principles and requirements for chemical hazardous agents in the workplace are added. ——Annex B is added, and information about chief drafting organizations and chief drafters of newly-added limits is given; ——Instructions for correct use of Annex A are further refined and improved. The control principles, key points and action levels of occupational exposure to hazardous agents, classification and control of occupational exposure levels, level-to-level management principles for hazardous operation of occupational diseases, etc., are added, and some contents in Annex A “Instructions for correct use” to the former standard have been revised into the text of the standard. The previous editions of this part are as follows: ——GBZ 2-2002; ——GBZ 2.1-2007. Occupational exposure limits for hazardous agents in the workplace - Part 1: Chemical hazardous agents 1 Scope This part specifies the hygiene requirements, determination, evaluation and control principles for occupational exposure to chemical hazardous agents in the workplace. This part is applicable to the hygienic design of industrial enterprises, as well as the management, control and occupational health supervision and inspection of occupational exposure to chemical hazardous agents in the workplace. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GBZ 1 Hygienic standards for the design of industrial enterprises GBZ 159 Specifications of air sampling for hazardous substances monitoring in the workplace GBZ/T 160(all parts) Methods for determination of toxic substances in the air of workplaces GBZ/T 192(all parts) Determination of dust in the air of workplaces GBZ/T 224 Terms of occupational health GBZ/T 225 Guideline for employer of prevention and control of occupational diseases GBZ/T 229.2 Classification of occupational hazards at workplaces - Part 2: Occupational exposure to chemicals GBZ/T 295 General principles of biological monitoring method in occupational population GBZ/T 300(all parts) Methods for determination of toxic substances in the air of workplaces 3 Terms, definitions and abbreviations For the purposes of this document, the terms and definitions established in GBZ/T 224 and the following ones apply. 3.1 chemical hazardous agents the chemical hazardous agents mentioned in this part include chemical substances, dust and biological agents existing in or arising from the workplace 3.2 occupational exposure the process that workers are exposed to occupational hazardous agents through respiratory tract, skin and mucosa in their occupational activities 3.3 adverse health effects hazardous health efforts or toxic effects of the organism arising from the exposure to occupational hazardous agents. Only a certain level of exposure, i.e. excessive exposure, can cause health damage 3.4 critical adverse health effects the adverse health effects that are used to determine the permissible exposure concentration of certain occupational hazardous agent, i.e. the adverse health effects that are based during the determination of the occupational exposure limits 3.5 occupational exposure limits; OELs the permissible exposure level that the workers are repeatedly exposed to one or more occupational hazardous agents for a long time in their occupational activities, which will not cause adverse health effects on the vast majority of exposed persons. The occupational exposure limits of chemical hazardous agents can include three categories, i.e., permissible concentration-time weighted average, permissible concentration-short term exposure limit and maximum allowable concentration Note: it is a revision of Definition 5.1 in GBZ/T 224-2010. 3.5.1 permissible concentration-time weighted average; PC-TWA the average permissible exposure concentration for 40 h per work week (8 h per working day), specified with time as the weight 3.5.2 permissible concentration-short term exposure limit; PC-STEL the weighted average concentration that allows the workers to be exposed for a short time (15 min), provided that the measured average exposure concentration for 40 h per work week (8 h per working day) meets the requirements of PC-TWA Note: it is a revision of Definition 5.3 in GBZ/T 224-2010. 3.5.3 maximum allowable concentration; MAC the concentration that any chemical hazardous agent shall not exceed within any working day, at any time and at any workplace Note: it is a revision of Definition 5.2 in GBZT 224-2004. 3.6 peak exposures; PE the maximum or peak concentration of a specific substance in the air determined in the shortest analyzable duration (no more than 15 min). For the chemical hazardous agents with PC-TWA but whose PC-STEL has not been established, peak exposures shall be used to control short-time contact. The maximum exposures of PC-TWA is allowed to be exceeded during any short time (15 min) within one working day 3.7 exposure level the concentration or intensity of workers' actual exposure to occupational hazardous agents in the workplace in a specific period of time during their occupational activities, which is detected by a standard determination method Note: it is a revision of Definition 2.22 in GBZ/T 224-2010. 3.8 ratio of occupational exposure level to OELs the ratio of the actual exposure level of workers to certain occupational hazardous agents, to the corresponding occupational exposure limits of the agents When workers are exposed to more than two kinds of chemical hazardous agents, the sum of the measured values of chemical hazardous agents and their corresponding occupational exposure limits is called the ratio of mixed exposure 3.9 action level the workers’ actual exposure level to chemical hazardous agents at which the employers are required to take control measures or actions such as occupational exposure monitoring, occupational health monitoring, occupational health training, and occupational hazard notification, also called administration level or administration concentration The action level of a chemical hazardous agent varies with the workplace environment and the hazardous agents, which is usually half of the allowable concentration of this agent Note: it is a revision of Definition 2.23 in GBZ/T 224-2010. 3.10 biological monitoring Systematical monitoring on the content (concentration) of chemical substances or their metabolites in biological materials such as blood and urine of workers, or the level of harmless biological effects caused by them, in order to evaluate the degree of workers' exposure to chemical hazardous agents and their possible health effects Note: it is a revision of Definition 6.1.2 in GBZ/T 224-2010. 3.11 biological exposure limits; BELs the maximum allowable value for chemical substances or their metabolites in workers’ biological materials, or for the biological effects caused by them, which is also a guiding value for evaluating biological monitoring results. As per five working days a week and eight working hours a day, when the biological monitoring value is within the recommended value range, the vast majority of workers will not be affected by adverse health effects. It is also known as biological exposure indices (BEIs) or biological limit values (BLVs) Note: it is a revision of Definition 5.9 in GBZ/T 224-2010. 4 Hygiene requirements 4.1 occupational exposure limits for chemical hazardous agents in the air of workplace Occupational exposure limits for chemical hazardous agents in the air of workplace are given in Table 1.

Foreword i 1 Scope 2 Normative references 3 Terms, definitions and abbreviations 4 Hygiene requirements 5 Monitoring and determination principles and requirements 6 Principles and requirements for occupational exposure control of chemical hazardous agents in workplaces 7 Instructions for proper use of this section Annex A (Normative) Instructions for proper use of this section

工作場所有害因素職業接觸限值 第1部分：化學有害因素 1 范圍 本部分規定了工作場所職業接觸化學有害因素的衛生要求、檢測評價及控制原則。 本部分適用于工業企業衛生設計以及工作場所化學有害因素職業接觸的管理、控制和職業衛生監督檢查等。 2 規范性引用文件 下列文件對于本文件的應用是必不可少的。凡是注日期的引用文件，僅注日期的版本適用于本文件。凡是不注日期的引用文件，其最新版本（包括所有的修改單）適用于本文件。 GBZ 1 工業企業設計衛生標準 GBZ 159 工作場所空氣中有害物質監測的采樣規范 GBZ/T 160（所有部分） 工作場所空氣有毒物質測定 GBZ/T 192（所有部分） 工作場所空氣中粉塵測定 GBZ/T 224 職業衛生名詞術語 GBZ/T 225 用人單位職業病防治指南 GBZ/T 229.2 工作場所職業病危害作業分級 第2部分：化學物 GBZ/T 295 職業人群生物監測方法 總則 GBZ/T 300（所有部分） 工作場所空氣有毒物質測定 3 術語、定義和縮略語 GBZ/T 224界定的以及下列術語和定義適用于本文件。 3.1 化學有害因素 chemical hazardous agents 本部分所稱化學有害因素包括工作場所存在或產生的化學物質、粉塵及生物因素。 3.2 職業接觸 occupational exposure 勞動者在職業活動中通過呼吸道、皮膚黏膜等與職業性有害因素之間接觸的過程。 3.3 不良健康效應 adverse health effects 機體因接觸職業性有害因素而產生或出現的有害健康效應或毒作用效應。只有達到一定水平的接觸，即過量的接觸才會引起健康損害。 3.4 臨界不良健康效應 critical adverse health effects 用于確定某種職業性有害因素容許接觸濃度大小，即職業接觸限值時所依據的不良健康效應。 3.5 職業接觸限值 occupational exposure limits；OELs 勞動者在職業活動過程中長期反復接觸某種或多種職業性有害因素，不會引起絕大多數接觸者不良健康效應的容許接觸水平?；瘜W有害因素的職業接觸限值分為時間加權平均容許濃度、短時間接觸容許濃度和最高容許濃度三類。 注：改寫GBZ/T 224—2010，定義5.1。 3.5.1 時間加權平均容許濃度 permissible concentration-time weighted average；PC-TWA 以時間為權數規定的8 h工作日、40 h工作周的平均容許接觸濃度。 3.5.2 短時間接觸容許濃度 permissible concentration-short term exposure limit；PC-STEL 在實際測得的8 h工作日、40 h工作周平均接觸濃度遵守PC-TWA的前提下，容許勞動者短時間（15 min）接觸的加權平均濃度。 注：改寫GBZ/T 224—2010，定義5.3。 3.5.3 最高容許濃度 maximum allowable concentration；MAC 在一個工作日內、任何時間、工作地點的化學有害因素均不應超過的濃度。 注：改寫GBZ/T 224—2010，定義5.2。 3.6 峰接觸濃度 peak exposures；PE 在最短的可分析的時間段內（不超過15 min）確定的空氣中特定物質的最大或峰值濃度。對于接觸具有PC-TWA但尚未制定PC-STEL的化學有害因素，應使用峰接觸濃度控制短時間的接觸。在遵守PC-TWA的前提下，容許在一個工作日內發生的任何一次短時間（15 min）超出PC-TWA水平的最大接觸濃度。 3.7 接觸水平 exposure level 應用標準檢測方法檢測得到的勞動者在職業活動中特定時間段內實際接觸工作場所職業性有害因素的濃度或強度。 注：改寫GBZ/T 224—2010，定義2.22。 3.8 職業接觸限值比值 ratio of occupational exposure level to OELs 勞動者接觸某種職業性有害因素的實際接觸水平與該因素相應職業接觸限值的比值。 當勞動者接觸兩種以上化學有害因素時，每一種化學有害因素的實際測量值與其對應職業接觸限值的比值之和，稱為混合接觸比值（ratio of mixed exposure）。 3.9 行動水平 action level 勞動者實際接觸化學有害因素的水平已經達到需要用人單位采取職業接觸監測、職業健康監護、職業衛生培訓、職業病危害告知等控制措施或行動的水平，也稱為管理水平（administration level）或管理濃度（administration concentration）。 化學有害因素的行動水平，根據工作場所環境、接觸的有害因素的不同而有所不同，一般為該因素容許濃度的一半。 注：改寫GBZ/T 224—2010，定義2.23。 3.10 生物監測 biological monitoring 系統地對勞動者的血液、尿等生物材料中的化學物質或其代謝產物的含量（濃度）、或由其所致的無害生物效應水平進行的系統監測，目的是評價勞動者接觸化學有害因素的程度及其可能的健康影響。 注：改寫GBZ/T 224—2010，定義6.1.2。 3.11 生物接觸限值 biological exposure limits；BELs 針對勞動者生物材料中的化學物質或其代謝產物、或引起的生物效應等推薦的最高容許量值，也是評估生物監測結果的指導值。每周5d工作、每天8h接觸，當生物監測值在其推薦值范圍以內時，絕大多數的勞動者將不會受到不良的健康影響。又稱生物接觸指數（Biological Exposure Indices，BEIs）或生物限值（biological limit values，BLVs）。 注：改寫GBZ/T 224—2010，定義5.9。 4 衛生要求 4.1 工作場所空氣中化學有害因素的職業接觸限值 工作場所空氣中化學有害因素的職業接觸限值見表1。 表1 工作場所空氣中化學有害因素職業接觸限值 序號 中文名 英文名 化學文摘號CAS號 OELs mg/m3 臨界不良健康效應 備注 MAC PC-TWA PC-STEL 1 安妥 Antu 86-88-4 — 0.3 — 甲狀腺效心；惡心 — 2 氨 Ammonia 7664-41-7 — 20 30 眼和上呼吸道刺激 — 3 2-氨基吡啶 2-Aminopyridine 504-29-0 — 2 — 中樞神經系統損傷；皮膚、黏膜刺激 皮 4 氨基磺酸銨 Ammonium sulfamate 7773-06-0 — 6 — 呼吸道、眼及皮膚刺激 — 5 氨基氰 Cyanamide 420-04-2 — 2 — 眼和呼吸道刺激；皮膚刺激 — 6 奧克托今 Octogen 2691-41-0 — 2 4 眼刺激 — 7 巴豆醛（丁烯醛） Crotonaldehyde 4170-30-3 12 — — 眼和呼吸道刺激；慢性鼻炎；神經功能障礙 — 8 百草枯 Paraquat 4685-14-7 — 0.5 — 呼吸系統損害；皮膚、黏膜刺激 — 9 百菌清 Chlorothalonil 1897-45-6 1 — — 皮膚刺激、致敏；眼和呼吸道刺激 G2B，敏 10 鋇及其可溶性化合物（按Ba計） Barium and soluble compounds, as Ba 7440-39-3(Ba) — 0.5 1.5 消化道刺激；低血鉀 — 11 倍硫磷 Fenthion 55-38-9 — 0.2 0.3 膽堿酯酶抑制 皮 12 苯 Benzene 71-43-2 — 6 10 頭暈、頭痛、意識障礙；全血細胞減少；再障；白血病 皮，G1 13 苯胺 Aniline 62-53-3 — 3 — 高鐵血紅蛋白血癥 皮 14 苯基醚（二苯醚） Phenyl ether 101-84-8 — 7 14 上呼吸道和眼刺激 — 15 苯醌 Benzoquinone 106-51-4 — 0.45 — 眼、皮膚刺激 — 16 苯硫磷 EPN 2104-64-5 — 0.5 — 膽堿酯酶抑制 皮 17 苯乙烯 Styrene 100-42-5 — 50 100 眼、上呼吸道刺激；神經衰弱；周圍神經癥狀 皮，G2B 18 吡啶 Pyridine 110-86-1 — 4 — 眼、呼吸道、皮膚刺激；神經衰弱及植物神經紊亂；肝、腎損害 — 19 芐基氯 Benzyl chloride 100-44-7 5 — — 呼吸道炎癥；皮膚、上呼吸道和眼刺激；肝腎損害 G2A 20 丙酸 Propionic acid 79-09-4 — 30 — 眼、皮膚和呼吸道刺激 — 21 丙酮 Acetone 67-64-1 — 300 450 呼吸道和眼刺激；麻醉；中樞神經系統損害 — 22 丙酮氰醇（按CN計） Acetone cyanohydrin, as CN 75-86-5 3 — — 呼吸道刺激；頭痛；缺氧/紫紺 皮 23 丙烯醇 Allyl alcohol 107-18-6 — 2 3 眼和上呼吸道刺激 皮 24 丙烯腈 Acrylonitrile 107-13-1 — 1 2 中樞神經系統損害；下呼吸道刺激 皮，G2B 25 丙烯菊酯 allethrin 584-79-2 — 5 — 皮膚刺激；神經系統損害 — 26 丙烯醛 Acrolein 107-02-8 0.3 — — 眼和上呼吸道刺激；肺水腫；肺氣腫 皮 27 丙烯酸 Acrylic acid 79-10-7 — 6 — 皮膚、眼及呼吸道刺激 皮 28 丙烯酸甲酯 Methyl acrylate 96-33-3 — 20 — 眼、皮膚和呼吸道刺激；皮膚損害及過敏 皮，敏 29 丙烯酸正丁酯 n-Butyl acrylate 141-32-2 — 25 — 皮膚、眼和呼吸道刺激；麻醉 敏 30 丙烯酰胺 Acrylamide 79-06-1 — 0.3 — 中樞神經系統損害；周圍神經系統損害 皮，G2A 31 草甘膦 Glyphosate 1071-83-6 — 5 — 肝、腎功能損傷 G2A 32 草酸 Oxalic acid 144-62-7 — 1 2 呼吸道、眼和皮膚刺激 — 33 抽余油(60℃～220℃) Raffinate oil (60℃～220℃) — — 300 — 麻醉；眼、皮膚和呼吸道黏膜刺激；神經系統功能障礙；肝、腎、血液系統改變 — 34 重氮甲烷 Diazomethane 334-88-3 — 0.35 0.7 呼吸道刺激；中樞神經系統抑制 — 35 臭氧 Ozone 10028-15-6 0.3 — — 刺激 — 36 o，o-二甲基-S-（甲基氨基甲酰甲基）二硫代磷酸酯（樂果） o, o-dimethyl methylcarbamoylmethyl phosphorodithioate (Rogor) 60-51-5 — 1 — 膽堿酯酶抑制 皮 37 O，O-二甲基-（2，2，2-三氯-1-羥基乙基）磷酸酯（敵百蟲） (2, 2, 2-trichloro-1-hydroxyethyl) dimethylphosphonate (Trichlorfon, Metrifonate or Dipterex) 52-68-6 — 0.5 1 膽堿酯酶抑制 — 38 N-3，4-二氯苯基-N’，N’-二甲基脲（敵草?。?1, 1-Dimethyl-3-(3, 4-Dichlorophenyl) urea (Diuron) 330-54-1 — 10 — 呼吸道、眼、皮膚刺激；貧血 — 39 2，4-二氯苯氧基乙酸（2，4-滴） 2, 4-Dicholrophenoxyacetic acid (2, 4-D) 94-75-7 — 10 — 甲狀腺效應、腎小管損傷 皮，G2B 40 二氯二苯基三氯乙烷（滴滴涕，DDT） Dichlorodiphenyltrichloroethane (DDT) 50-29-3 — 0.2 — 神經系統損害；肝腎損害；呼吸道、皮膚及眼刺激 G2A 41 碲及其化合物（不含碲化氫）（按Te計） Tellurium and Compounds (except H2Te), as Te 13494-80-9(Te) — 0.1 — 中樞神經系統損傷、肝損傷 — 42 碲化鉍（按Bi2Te3計） Bismuth telluride, as Bi2Te3 1304-82-1 — 5 — 呼吸道、眼、皮膚刺激；肝腎影響；貧血 — 43 碘 Iodine 7553-56-2 1 — — 眼、上呼吸道和皮膚刺激 — 44 碘仿 Iodoform 75-47-8 — 10 — 中樞神經系統損害；眼、呼吸道刺激 — 45 碘甲烷 Methyl iodide 74-88-4 — 10 — 眼刺激；中樞神經系統損害 皮 46 疊氮酸蒸氣 Hydrazoic acid vapor 7782-79-8 0.2 — — 鼻、眼刺激；低血壓 — 47 疊氮化鈉 Sodium azide 26628-22-8 0.3 — — 心臟損害；肺損傷 — 48 1，3-丁二烯 1, 3-Butadiene 106-99-0 — 5 — 眼和呼吸道刺激；麻醉；神經衰弱；皮膚灼傷或凍傷 G1 49 2-丁氧基乙醇 2-butoxyethanol 111-76-2 — 97 — 刺激 — 50 丁烯 Butylene 25167-67-3 — 100 — 窒息、弱麻醉和弱刺激作用。液態丁烯皮膚凍傷 — 51 毒死蜱 Chlorpyrifos 2921-88-2 — 0.2 — 膽堿酯酶抑制 皮 52 對苯二胺 p-phenylene diamine 106-50-3 — 0.1 — 皮膚致敏、呼吸系統損傷 皮，敏 53 對苯二甲酸 Terephthalic acid 100-21-0 — 8 15 眼、皮膚、黏膜和上呼吸道刺激 — 54 對二氯苯 p-Dichlorobenzene 106-46-7 — 30 60 眼、皮膚、上呼吸道刺激；肝損害 G2B 55 對硫磷 Parathion 56-38-2 — 0.05 0.1 膽堿酯酶抑制 皮，G2B 56 對特丁基甲苯 p-Tert-butyltoluene 98-51-1 — 6 — 眼、上呼吸道刺激 — 57 對硝基苯胺 p-Nitroaniline 100-01-6 — 3 — 高鐵血紅蛋白血癥；肝損害 皮 58 對硝基氯苯 p-Nitrochlorobenzene 100-00-5 — 0.6 — 皮膚致敏、皮炎；過敏性哮喘；肝損害 皮 59 多次甲基多苯基多異氰酸酯 Polymetyhlene polyphenyl isocyanate (PMPPI) 57029-46-6 — 0.3 0.5 皮膚、眼、呼吸道刺激；變態反應、哮喘 敏 60 二苯胺 Diphenylamine 122-39-4 — 10 — 上呼吸道、皮膚刺激；高鐵血紅蛋白血癥；肝腎損害 — 61 二苯基甲烷二異氰酸酯 Diphenylmethane diisocyanate 101-68-8 — 0.05 0.1 眼、上呼吸道刺激；哮喘 敏 62 二丙二醇甲醚（2-甲氧基甲乙氧基丙醇） Dipropylene glycol monomethyl ether ([2-Methoxymethylethoxy] pr opano, DPGMEl) 34590-94-8 — 600 900 輕度麻醉；中樞神經系統抑制 皮 63 二丙酮醇 Diacetone alcohol 123-42-2 — 240 — 眼、鼻、喉黏膜刺激；皮膚刺激 — 64 2-N-二丁氨基乙醇 2-N-Dibutylaminoethanol 102-81-8 — 4 — 眼和上呼吸道刺激；眼或皮膚灼傷 皮 65 二噁烷 1, 4-Dioxane 123-91-1 — 70 — 上呼吸道和眼刺激；肝損害 皮，G2B 66 二噁英類化合物 Polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans 1746-01-6 — 30pgTEQ/m3 — 致癌 G1 67 二氟氯甲烷 Chlorodifluoromethane 75-45-6 — 3500 — 中樞神經系統損害；心血管系統影響 — 68 二甲胺 Dimethylamine 124-40-3 — 5 10 眼、上呼吸道刺激；皮膚灼傷 — 69 二甲苯（全部異構體） Xylene (all isomers) 1330-20-7；95-47-6；108-38-3 — 50 100 呼吸道和眼刺激；中樞神經系統損害 — 70 N，N-二甲基苯胺 N, N-Dimethylanilne 121-69-7 — 5 10 高鐵血紅蛋白血癥 皮 71 1，3-二甲基丁基乙酸酯（仲-乙酸己酯） 1, 3-Dimethylbutyl acetate (sec-hexyl acetate) 108-84-9 — 300 — 眼、上呼吸道刺激；中樞神經系統抑制 — 72 二甲基二氯硅烷 Dimethyl dichlorosilane 75-78-5 2 — — 呼吸道、眼及皮膚、黏膜強刺激 — 73 二甲基甲酰胺 Dimethylformamide (DMF) 68-12-2 — 20 — 眼和上呼吸道刺激；肝損害 皮，G2A 74 3，3-二甲基聯苯胺 3, 3-Dimethylbenzidine 119-93-7 0.02 — — 眼和呼吸道刺激 皮，G2B 75 二甲基亞砜 Dimethyl sulfoxide 67-68-5 — 160 — 皮膚、黏膜刺激 皮 76 二甲基乙酰胺 Dimethyl acetamide, DMAC 127-19-5 — 20 — 致幻；呼吸道、皮膚刺激；神經衰弱 皮 77 二甲氧基甲烷 Dimethoxymethane (DMM) 109-87-5 — 3100 — 眼、黏膜刺激 — 78 二聚環戊二烯 Dicyclopentadiene 77-73-6 — 25 — 呼吸道和眼刺激；神經系統癥狀 — 79 二硫化碳 Carbon disulfide 75-15-0 — 5 10 眼及鼻黏膜刺激；周圍神經系統損害 皮 80 1，1-二氯-1-硝基乙烷 1, 1-Dichloro-1-nitroethane 594-72-9 — 12 — 上呼吸道刺激 — 81 1，3-二氯丙醇 1, 3-Dichloropropanol 96-23-1 — 5 — 眼、黏膜、皮膚強刺激；呼吸道損害、中樞神經系統抑制；麻醉；溶血 皮；G2B 82 1，2-二氯丙烷 1, 2-Dichloropropane 78-87-5 — 350 500 眼、皮膚、黏膜和呼吸道刺激；中樞神經系統抑制；肝腎損害 G1 83 1，3-二氯丙烯 1, 3-Dichloropropene 542-75-6 — 4 — 上呼吸道、眼、皮膚刺激；肝腎損害 皮，G2B 84 二氯二氟甲烷 Dichlorodifluoromethane 75-71-8 — 5000 — 眼及上呼吸道刺激；心臟毒性；液體接觸皮膚灼傷 — 85 二氯甲烷 Dichloromethane 75-09-2 — 200 — 碳氧血紅蛋白血癥；周圍神經系統損害 G2A 86 二氯乙炔 Dichloroacetylene 7572-29-4 0.4 — — 眼和上呼吸道刺激；意識障礙及肝腎損害 — 87 1，2-二氯乙烷 1, 2-Dichloroethane 107-06-2 — 7 15 中樞神經系統抑制；眼、呼吸道刺激；肺水腫；胃腸道刺激；肝腎損害 G2B 88 1，2-二氯乙烯（全部異構體） 1, 2-Dichloroethylene (all isomers) 156-59-2；156-60-5；540-59-0 — 800 — 中樞神經系統損害；眼及上呼吸道刺激 — 89 二硼烷 Diborane 19287-45-7 — 0.1 — 上呼吸道和眼刺激；頭痛 — 90 二縮水甘油醚 Diglycidyl ether 2238-07-5 — 0.5 — 眼和呼吸道刺激；麻醉作用 — 91 二硝基苯（全部異構體） Dinitrobenzene (all isomers) 25154-54-5；528-29-0；99-65-0；100-25-4 — 1 — 高鐵血紅蛋白血癥；眼損害 皮 92 二硝基甲苯 Dinitrotoluene 25321-14-6 — 0.2 — 高鐵血紅蛋白血癥；生殖毒性 G2B(2，4-；2，6-)，皮 93 4，6-二硝基鄰甲酚 4, 6-Dinitro-o-cresol 534-52-1 — 0.2 — 基礎代謝亢進；高熱 皮