Methyl how
Methyl how, Total:244 items.
The international standard classification for "Methyl how" includes: Chemical reagents , Alcohols. Ethers , Organic nitrogen compounds , Other organic chemicals , Surface active agents , Farming and forestry , Essential oils , Aromatic hydrocarbons .
The Chinese standard classification for "Methyl how" includes: General organic reagent and solvent , General organic chemicals , Chemical additive , Coal tar processed products , Analysis methods for industrial wastewater and pollutants , Dye , Forestry chemical raw material , Fragrances and flavors , Surface active agent .
Group Standards of the People's Republic of China
- T/SCAS 16-2024 N-fluorenylmethoxycarbonyl-N-trityl-glutamine
- T/ZXJY 010-2023 Methyl hexahydrophthalic anhydride
- T/HPFCIA 22017-2023 α-Methyl naphthalene
- T/CHBAS 57-2024 Tri-n-butylmethylammonium bis(trifluoromethanesulfonyl)imide and tri-n-butylmethylammonium bis(trifluoromethanesulfonyl)imide solution
- T/ZZB 1092-2019 (2-methyl-1-[4’-(methylthio)phenyl]-2-morpholino-propane-one)
- T/SDHCIA 037-2023 Methyl isobutyl ketone plant by-product - 2-methylpentane
- T/FSI 109-2023 Dimethicone with low volatility methylcyclosiloxane
- T/ZZB 0232-2017 Methyl vinyl silicone rubber
- T/CPUIA 0004-2023 1,3,3-trimethyl-N- (2-methylisopropyl) -5- [(2-methylisopropyl) ammonia] -cycloheximide
- T/NAIA 074-2021 Technical specification for the production of 2-nitro-4-thiamphenicol benzoic acid
- T/HEBQIA 248-2024 Alkoxytrimethylsilane
- T/SHCDA 000002-2020 Trimethylolpropane tris(2-methyl-1-azirdine) propionate
- T/NAIA 059-2021 2-Amino-4-methyl-6-methoxy-1,3,5-s-triazine for industrial use
- T/FSI 153-2024 Methyl phenyl vinyl silicone oil
- T/NAIA 075-2021 2-nitro-4-thiamphenicol benzoic acid
- T/FSI 129-2023 Methyl phenyl silicone oil
- T/QGCML 2309-2023 Tetramethoxymethyl glycoluril
- T/FSI 072-2021 Dimethyldimethoxysilane
- T/ZZB 2006-2020 Methyldopa
- T/ZAQ 10114-2022 Methyl tetrahydrophthalic anhydride
- T/ZZB Q064-2022 Methyl tetrahydrophthalic anhydride
- T/ZZB 1825-2020 Methylating agent methyl bromide
- T/ZZB 0849-2018 Dimethylformamide for industrial use
- T/SDHCIA 011-2021 Refining and recovery of dimethylformamide
- T/SDSCCE 020-2022 Reclaimed dimethylformamide
Professional Standard - Chemical Industry
- HG/T 3481-1999 Chemical reagent-4 - Methyl-2 - Pentanone
- HGB 3089-1959 methyl orange
- HG/T 2543-1993 Chloromethyl Methyl Ether for Industrial Use
- HGB 3040-1959 Methyl red
- HG/T 2028-1991 Determination of free chlorine and total chlorine in industrial circulating cooling water N, N-Diethyl-1, 4-Phenylenediamine spectrophotometric method
- HG/T 2028-2009 Dimethylformamide for industrial use
- HG/T 5501~5504-2018 Color laser-printed sheets, N-methyl-4-(p-formylstyryl)picolyl methyl sulfate, methyl benzoylformate, and 2,4-diethylthioxanthone (2018)
- HGB 3085-1959 Dimethyl Yellow (Dimethylaminoazobenzene)
- HG/T 5687~5688-2020 1,3,3-Trimethyl-2-methyleneindoline and 3,5-diaminobenzoic acid (2020)
- HG/T 5303~5305-2018 Photosensitive materials Polytetramethylene glycol 250-bis(4-benzoylphenoxyacetic acid) ester, 4-(dimethylamino)benzoic acid-(2-ethyl)hexyl ester and 4-dimethylaminobenzoic acid ethyl ester ( 2018)
- HG/T 4774-2014 Methyl isobutyl carbinol for industrial use
- HG/T 5652~5654-2019 1-Hydroxycyclohexylphenylphenone, 2-hydroxy-2-methyl-1-phenylacetone and ethyl 2,4,6-trimethylbenzoylphenylphosphonate (2019)
- HGB 3503-1962 Butanone (methyl ethyl ketone)
- HG/T 6286-2024 Catalyst for dehydrogenation of methyl isobutyl methanol to methyl isobutyl ketone
- HG/T 6152-2023 Analytical method for chemical composition of catalyst for dehydrogenation of methyl isobutyl methanol to methyl isobutyl ketone
- HGB 3486-1962 p-Dimethylaminobenzaldehyde
- HG/T 5946~5948-2021 1-(3-sulfophenyl)-3-methyl-5-pyrazolone, 1-(4-sulfophenyl)-3-methyl-5-pyrazolone and 1-(4-methyl phenyl)-3-methyl-5-pyrazolone (2021)
- HG/T 5072~5074-2016 2-Benzyl-2-diniethyl amino-1-[4-(4-morpholinyl) phenyl]-1-butanone
- HG/T 5624~5627-2019 Tetrahydroxymethylphosphonium Sulfate for Industrial Use, Tetrahydroxymethylphosphine Chloride for Industrial Use, Methyl Acetate for Industrial Use and Methyl Isobutyl Ketone (MIBK) for Industrial Use (2019)
- HG/T 5400~5401-2018 Industrial lead methanesulfonate and industrial copper methanesulfonate (2018)
- HG/T 2305-1992 Methyl Methacrylate for Industrial Use
- HG/T 5153~5156-2017 2-Ethylhexylphosphoric acid mono-2-ethylhexyl ester for industrial use
- HGB 3517-1962 Neutral red (2-methyl-3-amino-6-dimethylaminodiazaanthene hydrochloride)
Taiwan Provincial Standard of the People's Republic of China
- CNS 5458-1980 Methyl Isoamyl Ketone
- CNS 5233-1980 Methyl Isobutyl Carbinol
- CNS 5460-1980 Methyl Isobuty Ketone
- CNS 12278-1988 o-Nitroanisole
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
- GB/T 14375-1993 quality. Determination of monomethyl hydrazine. p - Dimethylaminobenzaldegyde spectrophotometric method
- GB/T 24796-2009 Cyclohexyl-methyl-di-methoxysilane
- GB/T 24212-2009 Methylnaphthalene oil
工业和信息化部
- HG/T 2543-2021 Chloromethyl methyl ether for industrial use
- HG/T 5707-2020 Test method of reaction performance for methyl isobutyl methyl alcohol dehydrogenation to methyl isobutyl ketone catalyst
- HG/T 5350-2018 Biochemical reagent-Tris(hydroxymethyl)aminomethane
- HG/T 5654-2019 Ethyl (2, 4, 6-trimethylbenzoyl) phenylphosphinate
- HG/T 5502-2018 N-Methyl-4-(p-formylstyryl)pyridinium methyl sulfate
- HG/T 5619-2019 Methylsulfonylmethane
- HG/T 2305-2017 Methyl methacrylate for industrial use
- HG/T 5154-2017 Dimethoxymethylphenylsilane for industrial use
- HG/T 5714-2020 Dimethyl methylphosphonate for industrial use
- HG/T 3481-2020 Chemical reagent-4-Methyl-2-pentanone
- YB/T 4150-2018 β-methyl naphthalene
- HG/T 5948-2021 1-(4-Tolyl)-3-methyl-5-pyrazolone
- HG/T 5485-2018 2-Methoxy-5-methylaniline-4-sulfonylethyl hydrogen sulfate ester
- HG/T 5652-2019 1-Hydroxycyclohexyl phenyl ketone
- HG/T 5949-2021 Red base KD(3-Amino-4-methoxy-N-phenylbenzamide )
- HG/T 5687-2020 1,3,3-Trimethy-2-methyleneindoline
- QB/T 5060-2017 Fragrance.2-methylpentyl 2-methylvalerate
- HG/T 5072-2016 Diphenyl(2,4,6-trimethylbenzoyl)phosphine oxide
- HG/T 6019-2022 Amisulpride acid 2-methoxy-4-amino-5-ethysulfonyl benzoic acid)
- HG/T 5073-2016 Bis(2,4,6-trimethylbenzoyl)phenylphosphine oxide
中华人民共和国国家质量监督检验检疫总局、中国国家标准化管理委员会
- GB/T 35500-2017 3,3,3,-Trifluoropropylmethyldimethoxysilane
- GB/T 35501-2017 Methyltrimethoxysilane for industrial use
Professional Standard - Agriculture
- T/CAFFCI 36-2019 Propanoic acid, 2-methyl,1,3-dimethyl-3-butenyl ester (Isopentyrate)
- T/CAFFCI 4-2018 α,3,3-Trimethycyclohexyl Carbinyl Formate
国家林业和草原局
- LY/T 3153-2019 3, 4, 5-Trimethoxybenzoic acid methyl ester
Professional Standard - Light Industry
- QB/T 2751-2012 Methyl Pyrazine
- QB 1781-1993 Methyl anthranilate
- QB/T 4420-2012 N-Ethyl-2-Isopropyl-5-Methylcyclohexane Carboxamide
- QB/T 1781-2011 Methyl anthranilate
- QB/T 2242-2011 3 7-Dimethyl-7-methoxy-2-octanol
- QB/T 4308-2012 Di(fatty acid ethyl ester)hydroxyethyl methyl ammonium methylsulfate
- QB/T 4533-2013 Fatty alkyl trimehtyl ammonium methylsulfates
- QB/T 2751-2005 Methyl pyrazine
Professional Standard - Energy
- NB/T 10428-2020 Polymethoxydimethyl ether
化学工业部
- HG 2028-1991 Industrial dimethylformamide
国家林业局
- LY/T 2863-2017 3,4,5-Trimethoxybenzoic acid
Professional Standard - Ferrous Metallurgy
- YB/T 4150-2006 β—Methyl naphthalene
IMO - International Maritime Organization
- IA636E-2002 MARPOL - How to do it
International Maritime Organization (IMO)
- IMO IA636E-2002 MARPOL - How to do it
Korean Agency for Technology and Standards (KATS)
- KS M 1669-2008 Methyl ethyl ketone
- KS M 8239-1981 Methyl ethyl ketone
- KS M 8239-2001 Methyl ethyl ketone
- KS M 8506-2008 Tricine N-[Tris(Hydroxymethyl)methyl]glycine〕
- KS M 8555-2005(2018) ρ-dimethylaminobenzaldehyde (reagent)
- KS M 6589-2008 2,2'-Methylene-bis(4-methyl-6-tert -butylphenol)
- KS M 6589-2001(2006) 2,2'-Methylene-bis(4-methyl-6-tert -butylphenol)
- KS M 6589-1982 2,2'-Methylene-bis(4-methyl-6-tert -butylphenol)
- KS M 1669-1985 Methyl ethyl ketone
- KS M 3103-2022 Methyl methacrylate
- KS M 3103-2017 Methyl methacrylate
- KS M 1669-2008(2018) Methyl ethyl ketone
- KS M 8506-2008(2018) Tricine N-[Tris(Hydroxymethyl)methyl]glycine〕
- KS M 3103-2017(2022) Methyl methacrylate
- KS M 3103-1982 Methyl methacrylate
- KS M 3103-2007 Methyl methacrylate
- KS M 8554-2005(2018) ρ-dimethylaminobenzylidenerhodanine (reagent)
- KS D 1950-1999 Methods for determination of cobalt in nickel materials for electron tubes
- KS M 8225-1981 methyl orange
- KS M 8352-2015 Methyl yellow
- KS M 8225-2006(2018) methyl orange
- KS M 8225-2023 Methyl orange
- KS M 4016-1997 METHYL VIOLET
- KS M 8063-2020 Methyl red
- KS M 8352-1995 Methyl yellow
- KS M 8063-2015 Methyl red
- KS M 8320-2001 N,N-Dimethylformamide
- KS M 8555-2023 p-Dimethylaminobenzaldehyde
- KS M 8506-2023 Tricine N-[Tris(Hydroxymethyl)methyl]glycine〕
- KS M 3811-2022 Polymethyl methacrylate sheets
- KS M 3811-2011 Polymethyl methacrylate sheets
- KS M 8239-2001(2011) METHLY ETHYL KETONE
- KS M 3811-1995 Polymethyl methacrylate sheets
- KS M 8381-2001(2011) 3-Methylbutyl acetate
- KS M 8555-2005 p-Dimethylaminobenzaldehyde
- KS M 8468-2013 Nitromethane
- KS M 3811-2016(2021) Polymethyl methacrylate sheets
- KS M 3811-2016 Polymethyl methacrylate sheets
SCC
- AENOR UNE 48150:1960 Methyl isobutyl carbinol.
- BS 1940:1953 Specification for ethyl methyl ketone (methyl ethyl ketone)
- BS 1941:1953 Specification for isobuty methyl l ketone (methyl isobutyl ketone)
- BS 3647:1963 Dimethoxyethyl phthalate (DI-(2-methoxyethyl) phthalate)
- AWWA ACE92208 Automatic Meter Reading for Water Utilities...Which Way to Go?
- AWWA ACE56176 There's Nitrates in the Well: What Are Your Options?
- MIL MIL-M-70605-1988 2,2' - METHYLENEBIS (4-METHYL-6-TERT-BUTYLPHENOL)
- BS 1941:1968 Specification for 4-methylpentan-2-one (methyl isobutyl ketone)
- AWWA JTMGT61362 When Your World Changes, What about You?
- ISO 9001:2015 for Small Enterprises - What to do ISO 9001:2015 for Small Enterprises - What to do?
- AWWA JAW62649 Journal AWWA — What Does the Future Hold for AWWA?
- BS 2710:1956 Specification for bromomethane (methyl bromide)
- HB 66-1996 ISO 9000 For Small Businesses - What to do
- SAA/SNZ HB66:1996 ISO 9000 For Small Businesses - What to do
- AWWA SOURCES55639 Multifamily Water Use Audits: So What?
- AWWA ACE61847 Five Years after Erin Brockovich: What's with Hexavalent Chromium?
- CAN/CGSB 15.52-1992 Methylethylketone technical
- AWWA ACE91142 Contingency Planning: Do You Know What to do in Case of an Emergency?
Spanish Association for Standardization (UNE)
- UNE 48150:1960 METHYL-ISOBUTYL-CARBINOL
- UNE 48 150 Methyl isobutyl carbinol
- UNE 84104:2014 Cosmetic raw materials. Sunscreens. 2-ethylhexyl 4-(dimethylamino) benzoate (Ethylhexyl dimethyl PABA).
- UNE 84128:2014 Cosmetic raw materials. Sunscreens. 1-(4-tert-butylphenyl)-3-(p-methoxyphenyl)-propane-1,3-dione (Butyl Methoxydibenzoylmethane).
- UNE 84105:2000 Cosmetic raw materials. 5-phenylmethoxo-4-hydroxy-2-methoxysulfonic acid.
- UNE 84614:1998 COSMETIC RAW MATERIALS. DIMETHYLDIMETHYLOL HYDANTOIN.
- UNE 84104:2000 Cosmetic raw materials. 2-ethylhexyl 4-(dimethylamino) benzoate.
Japanese Industrial Standards Committee (JISC)
- JIS K 4108:1995 Nitrobenzene and Nitrotoluenes (Nitrobenzene? ortho-Nitrotoluene? meta-Nitrotoluene? para-Nitrotoluene)
- JIS K 4137:1995 Anisidines (ortho-Anisidine? para-Anisidine? para-Phenetidine? 3-Amino-4-methoxytoluene)
- JIS K 4131:1995 Hydroxynaphthoic acid (3-Hydroxy-2-naphthoic acid.1-Hydroxy-2-naphthoic acid)
- JIS K 8674:1978 Triphenylchloromethane (trityl chloride)
- JIS K 8903:1995 4-Methyl-2-pentanone
- JIS K 4157:1977 Ortho-cresotinic acid (2-hydroxy-3-methylbenzoic acid)
- JIS K 8893:1996 Methyl orange
- JIS K 8494:1992 Methyl yellow
- JIS K 8500:1996 N,N-Dimethylformamide
- JIS K 8896:1992 Methyl red
- JIS K 8496:1994 para-Dimethylaminobenzaldehyde
- JIS K 9704:1994 2-Amino-2-hydroxymethyl-1,3-propanediol
- JIS K 8679:1966 Para-toluidine (4-aminotoluene)
- JIS K 6718:1993 Polymethyl methacrylate sheets
- JIS K 9523:1992 Nitromethane
- JIS K 9505:1978 Methylmercuric chloride
- JIS K 4125:1995 Benzyl chloride
- JIS K 2437:1994 Phenols (Phenol?Cresol and Cresylic Acid?Xylenols)
- JIS K 8496:2019 p-Dimethylaminobenzaldehyde (Reagent)
Danish Standards Foundation
- DS-hæfte 23:2005 WEEE – What to do – Standards, legislation and recycling schemes
(U.S.) Ford Automotive Standards
- FORD M97B14-A-1991 TRIS NITROMETHANE DISINFECTANT
American Society for Testing and Materials (ASTM)
- ASTM D1152-97 Standard Specification for Methanol (Methyl Alcohol)
- ASTM D1153-06 Standard Specification for Methyl Isobutyl Ketone
- ASTM D2635-91(1996)e1 Standard Specification for Methyl Isobutyl Carbinol
- ASTM D1153-94(2001) Standard Specification for Methyl Isobutyl Ketone
- ASTM D2635-07 Standard Specification for Methyl Isobutyl Carbinol
- ASTM D7597-16(2017) Standard Test Method for Determination of Diisopropyl Methylphosphonate, Ethyl Hydrogen Dimethylamidophosphate, Ethyl Methylphosphonic Acid, Isopropyl Methylphosphonic Acid, Methylphosphonic Acid and
- ASTM D2635-01 Standard Specification for Methyl Isobutyl Carbinol
- ASTM D1153-94(1997) Standard Specification for Methyl Isobutyl Ketone
- ASTM D1153-12 Standard Specification for Methyl Isobutyl Ketone
- ASTM D2635-07(2012) Standard Specification for Methyl Isobutyl Carbinol
- ASTM RR-D19-1187 2009 D7597-Test Method for Determination of Diisopropyl Methylphosphonate, Ethyl Hydrogen Dimethylamidophosphate, Ethyl Methylphosphonic Acid, Isopropyl Methylphosphonic Acid, Methylphosphonic Acid and Pinacolyl Methylphosphonic Acid in Water by Liquid Chromat
- ASTM E2866-21 Standard Test Method for Determination of Diisopropyl Methylphosphonate, Ethyl Methylphosphonic Acid, Isopropyl Methylphosphonic Acid, Methylphosphonic Acid, and Pinacolyl Methylphosphonic Acid in Soi
- ASTM D1152-06 Standard Specification for Methanol (Methyl Alcohol)
- ASTM D7597-09 Standard Test Method for Determination of Diisopropyl Methylphosphonate, Ethyl Hydrogen Dimethylamidophosphate, Ethyl Methylphosphonic Acid, Isopropyl Methylphosphonic Acid, Methylphosphonic Acid and
- ASTM D7597-09e1 Standard Test Method for Determination of Diisopropyl Methylphosphonate, Ethyl Hydrogen Dimethylamidophosphate, Ethyl Methylphosphonic Acid, Isopropyl Methylphosphonic Acid, Methylphosphonic Acid and
- ASTM D1152-06(2012) Standard Specification for Methanol (Methyl Alcohol)
- ASTM D7597-16(2024) Standard Test Method for Determination of Diisopropyl Methylphosphonate, Ethyl Hydrogen Dimethylamidophosphate, Ethyl Methylphosphonic Acid, Isopropyl Methylphosphonic Acid, Methylphosphonic Acid and
- ASTM D7597-16 Standard Test Method for Determination of Diisopropyl Methylphosphonate, Ethyl Hydrogen Dimethylamidophosphate, Ethyl Methylphosphonic Acid, Isopropyl Methylphosphonic Acid, Methylphosphonic Acid and Pinacolyl Methylphosphonic Acid in Water by Liqu
National Sanitation Foundation (NSF)
- NSF MIBK-2007 METHYL ISOBUTYL KETONE CAS # 108-10-1 ORAL RISK ASSESSMENT DOCUMENT
ITE - Institute of Transportation Engineers
- VHS-006-1987 Traffic Congestion: What Does the Future Hold?
British Standards Institution (BSI)
- BS 1941:1993 Specification for 4-methylpentan-2-one (isobutyl methyl ketone) for industrial use
- BS 1941:1993(2011) Specification for 4 - methylpentan - 2 - one (isobutyl methyl ketone) for industrial use
U.S. Military Regulations and Norms
- ARMY MIL-E-14828-1969 ETHYLENE DIMETHACRYLATE (ETHYLENE GLYCOL, DIMETHACRYLATE)
- ARMY MIL-T-339 C-1973 TETRYL (TRINITROPHENYLMETHYLNITRAMINE)
- ARMY MIL-T-339 C VALID NOTICE 1-1991 TETRYL (TRINITROPHENYLMETHYLNITRAMINE)
- ARMY MIL-M-70605 REINST NOTICE 2-1999 2,2 - METHYLENEBIS (4-METHYL-6-TERT-BUTYLPHENOL)
- ARMY MIL-M-70605 (1)-1990 2,2 - METHYLENEBIS (4-METHYL-6-TERT-BUTYLPHENOL)
- ARMY MIL-M-70605-1988 2,2 - METHYLENEBIS (4-METHYL-6-TERT-BUTYLPHENOL)
- ARMY MIL-D-20309 NOTICE 1-1996 DINITROMETHYLANLINE
- ARMY MIL-D-20309-1951 DINITROMETHYLANLINE
- ARMY MIL-D-20309 VALID NOTICE 2-2013 Dinitromethylanline
Indonesia Standards
- SNI 06-2873-1992 Methyl methacrylate
GSO
- BH GSO 2244:2013 4-methylpentan-2-one(isobutyl methyl ketone) for industrial use
- GSO 2244:2012 4-methylpentan-2-one(isobutyl methyl ketone) for industrial use
- OS GSO 2244:2012 4-methylpentan-2-one(isobutyl methyl ketone) for industrial use
- OS GSO 2252:2012 4-methylpentan-2-one(isobutyl methyl ketone) for industrial use – methods of test
- BH GSO 2252:2013 4-methylpentan-2-one(isobutyl methyl ketone) for industrial use – methods of test
KR-KS
- KS M 8506-2008(2023) Tricine N-[Tris(Hydroxymethyl)methyl]glycine〕
- KS M 8555-2005(2023) p-Dimethylaminobenzaldehyde
- KS M 8225-2006(2023) Methyl orange
HU-MSZT
- MSZ 3796-1981 For analysis of 4-dimethyl-amino-benzaldehyde
- MNOSZ 19803-1953 Methyl, xylin
- MNOSZ 9267-1953 benzylidene
- MNOSZ 3374-1954 Methyl acetylene
RO-ASRO
- STAS 3510-1963 Methyl oil
- STAS 3510-1983 METHYL OIL
- STAS 7507-1987 METHYL POL YMETHACR YLATE PLATES
International Organization for Standardization (ISO)
- ISO 9001 Handbook:2015 ISO 9001:2015 for Small Enterprises - What to do
CZ-CSN
- CSN 66 1820-1983 Dimetliylformamido watterless
- CSN 66 1975-1983 Methyl metacrylate (monomer)
- CSN 86 4618-1963 Penzethin G
- CSN 68 6880-1953 Methylglutaminepropane
- CSN 68 6980-1954 methylene green
IN-BIS
- IS 7696-1975 Para-Toluene Methyl Ether Specification
GM Europe
- GME QK 000530-1996 Polymethylmethacrylat, modifiziert Polymethyl Methacrylate, Modified English/German
Standard Association of Australia (SAA)
- AS 2508.3.013:1982 Safe storage and handling information card - Methyl ethyl ketone (MEK) (ethyl methyl ketone)
Society of Automotive Engineers (SAE)
- SAE AMS3004B-1967 ALCOHOL, METHYL
- SAE AMS3004F-2006 Alcohol, Methyl
- SAE AMS3004C-1983 ALCOHOL, METHYL
- SAE AMS3004G-2001 Alcohol, Methyl
- SAE AMS3004A-1951 ALCOHOL, METHYL
- SAE AMS3004-1948 ALCOHOL, METHYL
SAE - SAE International
- SAE AMS3004D-1989 ALCOHOL@ METHYL
- SAE AMS3004E-1994 Alcohol@ Methyl
- SAE AMS3004G-2009 Alcohol@ Methyl
PL-PKN
- PN C99061-1964 p-Methylaminophenol sulphate (Metol), photographic grade
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