#	Letters of Interpretation
1	11/21/2023 - 1910.1200(g) - HCS applicability to an industrial marker containing liquid paint or ink
2	08/13/2021 - 1910.1200(g)(4) - Use of generic safety data sheets and consumer products
3	08/13/2021 - 1910.1200(g), 1910.1200(g)(4) - Use of generic safety data sheets and consumer products
4	03/30/2021 - 1910.1200(g)(2)(viii) - HCS listing of occupational exposure limits (OELs) in section 8 on a safety data sheet (SDS), and applicability of different exposures to pharmaceutical drugs
5	10/28/2020 - 1910.1200(g)(2)(viii) - Clarification to the disclosure of chemical ingredients in SDS sections 3 and 8
6	10/28/2020 - 1910.1200(g)(2)(iii) - Clarification to the disclosure of chemical ingredients in SDS sections 3 and 8
7	09/18/2018 - 1910.1200(g)(2)(ii) - Hazard Communication Standard – SDS responsible party and hazards not otherwise classified
8	07/30/2018 - 1910.1200(g) - EPA Risk Pesticides Subject to HCS Labeling
9	07/24/2017 - 1910.1200(g)(1) - Listing and disclosing Benzene as a human carcinogen on the label and SDS
10	07/24/2017 - 1910.1200(g), 1910.1200(g)(1) - Listing and disclosing Benzene as a human carcinogen on the label and SDS
11	05/09/2017 - 1910.1200(g)(2) - Separate SDSs and labels for dual components
12	05/09/2017 - 1910.1200(g)(1) - Separate SDSs and labels for dual components
13	01/12/2017 - 1910.1200(g) - Hazard Communication Standard – Classifying 'Articles'
14	05/20/2016 - 1910.1200(g)(2) - By-product hazard information included in safety data sheet, Section 2
15	02/25/2016 - 1910.1200(g)(4) - Safety data sheets for custom blend fertilizers
16	02/25/2016 - 1910.1200(g)(1) - Safety data sheets for custom blend fertilizers
17	10/02/2015 - 1910.1200(g)(2) - The labeling elements required on the safety data sheet (SDS) under the Hazard Communication Standard (HCS 2012)
18	07/28/2015 - 1910.1200(g)(6)(iv) - Hazard communication 2012-compliant labels and safety data sheets on shipped containers of hazardous chemicals
19	07/27/2015 - 1910.1200(g)(8) - Hazard communication effective dates and SDSs
20	07/27/2015 - 1910.1200(g)(6)(iv) - Hazard communication effective dates and SDSs
21	07/27/2015 - 1910.1200(g)(1) - Hazard communication effective dates and SDSs
22	06/29/2015 - 1910.1200(g)(4) - Definition of complex mixture
23	06/19/2015 - 1910.1200(g)(2)(i) - Correct use of product identifiers on safety data sheets and labels
24	03/27/2015 - 1910.1200(g) - Hazard communication requirements for commercial ink cartridges
25	02/10/2015 - 1910.1200(g)(1) - Use of multiple countries' information on labels of hazardous chemicals
26	12/23/2014 - 1910.1200(g)(2)(x) - The requirement for single or multiple SDSs
27	12/23/2014 - 1910.1200(g)(1) - The requirement for single or multiple SDSs
28	05/13/2013 - 1910.1200(g)(6)(ii) - Electronic distribution of safety data sheets (SDSs) under the revised Hazard Communication standard
29	11/17/2011 - 1910.1200(g)(5) - Requirement to list carcinogens on labels under GHS.
30	05/12/2011 - 1910.1200(g)(8) - Applicability of the Hazard Communication standard to DEF tank operations.
31	04/15/2011 - 1910.1200(g)(2)(vi) - Requirements for including a manufacturer's occupational exposure limit (OEL) on a material safety data sheet (MSDS).
32	08/31/2009 - 1910.1200(g)(2)(xii) - Use of physical versus mailing address of the responsible party listed on the MSDS.
33	05/19/2009 - 1910.1200(g) - Application of OSHA PEL for nitric oxide as 8-hr TWA to pregnant employees.
34	02/27/2009 - 1910.1200(g)(2) - Alleged deficiencies on an MSDS for one of Icynene's insulation products.
35	02/27/2009 - 1910.1200(g), 1910.1200(g)(2) - Alleged deficiencies on an MSDS for one of Icynene's insulation products.
36	01/14/2009 - 1910.1200(g)(2) - Alleged deficiencies contained on a material safety data sheet (MSDS) for a spray-on insulation product (the Icynene Insulation System).
37	01/14/2009 - 1910.1200(g)(1) - Alleged deficiencies contained on a material safety data sheet (MSDS) for a spray-on insulation product (the Icynene Insulation System).
38	12/22/2008 - 1910.1200(g)(5) - Requirements of the HCS and the employer's ability to rely on a manufacturer's hazard determination.
39	07/31/2008 - 1910.1200(g)(7)(iii) - Requirements for labels and material safety data sheets for distributors of lumber.
40	04/18/2008 - 1910.1200(g)(2)(xi) - Clarification of the requirement to provide accurate and current hazard information on an MSDS.
41	04/14/2008 - 1910.1200(g) - Request to provide list of corrosive materials and concentrations requiring use of emergency eyewashes and showers.
42	03/07/2007 - 1910.1200(g)(2) - Use of generic MSDSs written by third-party companies and employer responsiblities when using an online MSDS service.
43	03/07/2007 - 1910.1200(g), 1910.1200(g)(2) - Use of generic MSDSs written by third-party companies and employer responsiblities when using an online MSDS service.
44	01/25/2007 - 1910.1200(g)(6)(i) - Responsibility of chemical manufacturers and importers to provide MSDSs to one or more establishments owned and managed by same employer.
45	04/27/2005 - 1910.1200(g) - Requirements for maintaining Material Safety Data Sheets (MSDSs) for coal including coal dust, fly ash, and silica dust.
46	05/27/2004 - 1910.1200(g)(1) - Requirements for manufacturers, who are no longer in business or have discontinued a product line, to provide MSDSs and product information.
47	02/05/2004 - 1910.1200(g) - Material safety data sheet requirements for experimental chemical mixtures that are shipped off-site.
48	08/27/2003 - 1910.1200(g) - Current OSHA initiatives to improve quality of chemical hazard information provided to workers.
49	03/23/2001 - 1910.1200(g) - Storage of flammable liquids and corrosives in the same cabinet.
50	01/19/2000 - 1910.1200(g)(5) - Responsible party for MSDSs and labelling of imported chemicals.
51	01/19/2000 - 1910.1200(g)(2)(xii) - Responsible party for MSDSs and labelling of imported chemicals.
52	12/07/1999 - 1910.1200(g)(8) - Employee access to MSDSs required by 1910.1200 vs. 1910.1020.
53	11/09/1999 - 1910.1200(g) - OSHA will not currently pursue a national MSDS repository.
54	06/03/1999 - 1910.1200(g)(4) - One MSDS may apply to multiple complex mixtures having similar hazards.
55	05/28/1999 - 1910.1200(g) - Applicability of the Laboratory Standard; MSDS and labeling requirements.
56	04/21/1999 - 1910.1200(g) - Chemical suppliers must ensure downstream flow of hazard information (MSDSs).
57	04/05/1999 - 1910.1200(g) - Hazard communication requirements for diatomaceous earth.
58	02/18/1999 - 1910.1200(g) - Clarification of systems for electronic access to MSDSs
59	10/13/1998 - 1910.1200(g)(8) - Using the telephone to back-up eletronic access to MSDSs.
60	02/20/1997 - 1910.1200(g)(8) - Manufacturers' use of the Internet for distribution of MSDSs to downstream users.
61	01/30/1997 - 1910.1200(g)(8) - Material Safety Data Sheets.
62	01/30/1997 - 1910.1200(g)(1) - Material Safety Data Sheets.
63	11/27/1995 - 1910.1200(g) - OSHA's Hazard Communication Standard.
64	11/29/1994 - 1910.1200(g) - Fall Protection at residential construction sites.
65	01/03/1994 - 1910.1200(g)(1) - Hazard communication standard and pharmaceuticals
66	09/03/1993 - 1910.1200(g) - Solvents classified as a combustible liquid on the basis of the MSDS
67	02/25/1993 - 1910.1200(g) - MSDS requirements for salt
68	07/10/1992 - 1910.1200(g) - MSDS labelling requirements.
69	10/16/1991 - 1910.1200(g)(2) - Hazard Determinations under the HCS for Sodium Hypochlorite.
70	04/04/1991 - 1910.1200(g) - MSDS requirements for scrap materials
71	07/06/1990 - 1910.1200(g) - Interpretation on whether "an equivalent electronic information system" could be used in lieu of MSDSs to satisfy the HCS.
72	06/04/1990 - 1910.1200(g)(10) - Provision of computer generated or FAX transmission MSDSs
73	06/04/1990 - 1910.1200(g)(9) - Provision of computer generated or FAX transmission MSDSs
74	05/16/1990 - 1910.1200(g)(8) - Availability of MSDSs on Construction Sites
75	01/22/1990 - 1910.1200(g)(6)(i) - Hazard Communication Standard.
76	01/22/1990 - 1910.1200(g), 1910.1200(g)(6)(i) - Hazard Communication Standard.
77	01/09/1990 - 1910.1200(g) - Procedures a demolition and salvage constructor could employ in lieu of providing material safety data sheets for specific metals.
78	08/07/1989 - 1910.1200(g) - Hazard Communication Standard (HCS) Material Safety Data Sheet Requirements for the Construction Industry.
79	07/20/1989 - 1910.1200(g) - Requirements for downstream transmission of material safety data sheets (MSDSs).
80	04/24/1989 - 1910.1200(g) - MSDS distribution requirements for chemical manufacturers and importers, distributors and retail distributors.
81	03/03/1989 - 1910.1200(g) - Distributor's and retailer's responsibilities for providing MSDSs.
82	02/17/1989 - 1910.1200(g) - Listing of decomposition products on MSDSs where they are present during normal use or only in the event of a fire.
83	02/15/1989 - 1910.1200(g) - Distributor of health care products would be a "distributor" rather than a "retail distributor" under the HCS.
84	01/13/1989 - 1910.1200(g) - Response to request for OSHA endorsement of a distributor's program for downstream transmittal of MSDSs.
85	10/24/1988 - 1910.1200(g) - Hazard determination and MSDS requirements under the Hazard Communication Standard (HCS).
86	05/12/1988 - 1910.1200(g) - Material Safety Data Sheet Requirements Under the Hazard Communication Standard.
87	04/21/1988 - 1910.1200(g) - Material safety data sheets for liquid plant food.
88	10/26/1987 - 1910.1200(g) - Labeling and MSDSs for a stump router cutter head which has carbide tips on the cutter teeth.
89	10/01/1987 - 1910.1200(g) - Retention requirements for superseded MSDSs.
90	10/25/1986 - 1910.1200(g)(2)(xii) - Interpretation on availability of emergency information under the Hazard Communication Standard.
91	02/14/1986 - 1910.1200(g) - MSDS should be distributed for welding wire containing hazardous chemicals.
92	01/13/1986 - 1910.1200(g)(9) - Maintaining MSDSs on a computer data base.
93	01/13/1986 - 1910.1200(g)(8) - Maintaining MSDSs on a computer data base.
94	09/25/1984 - 1910.1200(g) - Requirements for alternate warning methods, delays between filling and labeling a chemical container, and label identification of mixtures under HCS.