CI 42051
CI 42051 is a cosmetic ingredient classified as Colorant. Also known as CAS 3536-49-0. It is regulated in 21 markets including UAE, Armenia, Bahrain.
Also Known As
- CAS Number
- 3536-49-0
Market Overview — 29 Markets
Detailed Regulations
Europe2 regulations
- Chemical name
- Ethanaminium, N-(4-((4-(diethylamino)phenyl)(5-hydroxy-2,4-disulfophenyl)methylene)-2,5-cyclohexadien-1-ylidene)-N-ethylhydroxide, inner salt, calcium salt (2:1) and its insoluble barium, strontium and zirconium lakes, salts and pigments
- CAS
- 3536-49-0
- Conditions of use
- Purity criteria as set out in Commission Directive 95/45/EC (E 131)
- Color Index
- CI 42051
Source: EC 1223/2009 Annex IV
- Chemical name
- Ethanaminium, N-(4-((4-(diethylamino)phenyl)(5-hydroxy-2,4-disulfophenyl)methylene)-2,5-cyclohexadien-1-ylidene)-N-ethyl-, hydroxide, inner salt, calcium salt (2:1) and its insoluble barium, strontium and zirconium lakes, salts and pigments
- Other conditions
- Purity criteria as set out in Commission Directive 95/45/EC (E 131)
- Color Index
- 42051
Source: UK retained EC 1223/2009 Annex IV
Americas1 regulation
- Product type
- products_in_general
- Conditions of use
- Application fields: products_in_general
- Color Index
- CI 42051
Source: ANVISA RDC 628
East Asia & Oceania1 regulation
- Chemical name
- CI 42051
- Product type
- Scope 1: All cosmetic products
- Conditions of use
- Using in hair dye products is forbidden.
- Color Index
- CI 42051
Source: TFDA Cosmetics Regulations
ASEAN6 regulations
- Chemical name
- Blue
- Product type
- All cosmetic products
- Color Index
- CI 42051 ( 2 )
Source: ASEAN Cosmetic Directive (HSA Dec 2025)
- Chemical name
- Blue
- Product type
- All cosmetic products
- Color Index
- CI 42051 ( 2 )
Source: ASEAN Cosmetic Directive (HSA Dec 2025)
- Chemical name
- Blue
- Product type
- All cosmetic products
- Color Index
- CI 42051 ( 2 )
Source: ASEAN Cosmetic Directive (HSA Dec 2025)
- Chemical name
- Blue
- Product type
- All cosmetic products
- Color Index
- CI 42051 ( 2 )
Source: ASEAN Cosmetic Directive (HSA Dec 2025)
- Chemical name
- Blue
- Product type
- All cosmetic products
- Color Index
- CI 42051 ( 2 )
Source: ASEAN Cosmetic Directive (HSA Dec 2025)
- Chemical name
- Blue
- Product type
- All cosmetic products
- Color Index
- CI 42051 ( 2 )
Source: ASEAN Cosmetic Directive (HSA Dec 2025)
GCC6 regulations
- Chemical name
- Ethanaminium, N-(4-((4-(diethylamino)phenyl)(5-hydroxy-2,4-disulfophenyl)methylene)-2,5-cyclohexadien-1-ylidene)-N-ethylhydroxide, inner salt, calcium salt (2:1) and its insoluble barium, strontium and zirconium lakes, salts and pigments
- CAS
- 3536-49-0
- Conditions of use
- Purity criteria as set out in Commission Directive 95/45/EC (E 131)
- Color Index
- CI 42051
Source: GSO 1943:2024 (based on EU 1223/2009 IV)
- Chemical name
- Ethanaminium, N-(4-((4-(diethylamino)phenyl)(5-hydroxy-2,4-disulfophenyl)methylene)-2,5-cyclohexadien-1-ylidene)-N-ethylhydroxide, inner salt, calcium salt (2:1) and its insoluble barium, strontium and zirconium lakes, salts and pigments
- CAS
- 3536-49-0
- Conditions of use
- Purity criteria as set out in Commission Directive 95/45/EC (E 131)
- Color Index
- CI 42051
Source: GSO 1943:2024 (based on EU 1223/2009 IV)
- Chemical name
- Ethanaminium, N-(4-((4-(diethylamino)phenyl)(5-hydroxy-2,4-disulfophenyl)methylene)-2,5-cyclohexadien-1-ylidene)-N-ethylhydroxide, inner salt, calcium salt (2:1) and its insoluble barium, strontium and zirconium lakes, salts and pigments
- CAS
- 3536-49-0
- Conditions of use
- Purity criteria as set out in Commission Directive 95/45/EC (E 131)
- Color Index
- CI 42051
Source: GSO 1943:2024 (based on EU 1223/2009 IV)
- Chemical name
- Ethanaminium, N-(4-((4-(diethylamino)phenyl)(5-hydroxy-2,4-disulfophenyl)methylene)-2,5-cyclohexadien-1-ylidene)-N-ethylhydroxide, inner salt, calcium salt (2:1) and its insoluble barium, strontium and zirconium lakes, salts and pigments
- CAS
- 3536-49-0
- Conditions of use
- Purity criteria as set out in Commission Directive 95/45/EC (E 131)
- Color Index
- CI 42051
Source: GSO 1943:2024 (based on EU 1223/2009 IV)
- Chemical name
- Ethanaminium, N-(4-((4-(diethylamino)phenyl)(5-hydroxy-2,4-disulfophenyl)methylene)-2,5-cyclohexadien-1-ylidene)-N-ethylhydroxide, inner salt, calcium salt (2:1) and its insoluble barium, strontium and zirconium lakes, salts and pigments
- CAS
- 3536-49-0
- Conditions of use
- Purity criteria as set out in Commission Directive 95/45/EC (E 131)
- Color Index
- CI 42051
Source: GSO 1943:2024 (based on EU 1223/2009 IV)
- Chemical name
- Ethanaminium, N-(4-((4-(diethylamino)phenyl)(5-hydroxy-2,4-disulfophenyl)methylene)-2,5-cyclohexadien-1-ylidene)-N-ethylhydroxide, inner salt, calcium salt (2:1) and its insoluble barium, strontium and zirconium lakes, salts and pigments
- CAS
- 3536-49-0
- Conditions of use
- Purity criteria as set out in Commission Directive 95/45/EC (E 131)
- Color Index
- CI 42051
Source: GSO 1943:2024 (based on EU 1223/2009 IV)
EAEU5 regulations
- Chemical name
- Этанаминиум, N-(4-((4-(диэтиламино)фенил)(5-гидрокси-2,4-дисльфофенил)метилен)-2,5-циклогексадиен-1-илидин)-N-этил-, гидроксид, внутренняя соль, соль кальция (2:1) и его нерастворимые бария, стронция и циркония лаки, соли и пигменты Ethanaminium, N-(4-((4-(diethylamino)phenyl)(5-hydroxy-2,4-disulfophenyl)methylene)-2,5-cyclohexadien-1-ylidene)-N-ethyl-, hydroxide, inner salt, calcium salt (2:1) and its insoluble barium, strontium and zirconium lakes, salts and pigments
- Other conditions
- (E131)
- Color Index
- 42051
Source: TR CU 009/2011 Annex 3 (Colorants) (Ref 60)
- Chemical name
- Этанаминиум, N-(4-((4-(диэтиламино)фенил)(5-гидрокси-2,4-дисльфофенил)метилен)-2,5-циклогексадиен-1-илидин)-N-этил-, гидроксид, внутренняя соль, соль кальция (2:1) и его нерастворимые бария, стронция и циркония лаки, соли и пигменты Ethanaminium, N-(4-((4-(diethylamino)phenyl)(5-hydroxy-2,4-disulfophenyl)methylene)-2,5-cyclohexadien-1-ylidene)-N-ethyl-, hydroxide, inner salt, calcium salt (2:1) and its insoluble barium, strontium and zirconium lakes, salts and pigments
- Other conditions
- (E131)
- Color Index
- 42051
Source: TR CU 009/2011 Annex 3 (Colorants) (Ref 60)
- Chemical name
- Этанаминиум, N-(4-((4-(диэтиламино)фенил)(5-гидрокси-2,4-дисльфофенил)метилен)-2,5-циклогексадиен-1-илидин)-N-этил-, гидроксид, внутренняя соль, соль кальция (2:1) и его нерастворимые бария, стронция и циркония лаки, соли и пигменты Ethanaminium, N-(4-((4-(diethylamino)phenyl)(5-hydroxy-2,4-disulfophenyl)methylene)-2,5-cyclohexadien-1-ylidene)-N-ethyl-, hydroxide, inner salt, calcium salt (2:1) and its insoluble barium, strontium and zirconium lakes, salts and pigments
- Other conditions
- (E131)
- Color Index
- 42051
Source: TR CU 009/2011 Annex 3 (Colorants) (Ref 60)
- Chemical name
- Этанаминиум, N-(4-((4-(диэтиламино)фенил)(5-гидрокси-2,4-дисльфофенил)метилен)-2,5-циклогексадиен-1-илидин)-N-этил-, гидроксид, внутренняя соль, соль кальция (2:1) и его нерастворимые бария, стронция и циркония лаки, соли и пигменты Ethanaminium, N-(4-((4-(diethylamino)phenyl)(5-hydroxy-2,4-disulfophenyl)methylene)-2,5-cyclohexadien-1-ylidene)-N-ethyl-, hydroxide, inner salt, calcium salt (2:1) and its insoluble barium, strontium and zirconium lakes, salts and pigments
- Other conditions
- (E131)
- Color Index
- 42051
Source: TR CU 009/2011 Annex 3 (Colorants) (Ref 60)
- Chemical name
- Этанаминиум, N-(4-((4-(диэтиламино)фенил)(5-гидрокси-2,4-дисльфофенил)метилен)-2,5-циклогексадиен-1-илидин)-N-этил-, гидроксид, внутренняя соль, соль кальция (2:1) и его нерастворимые бария, стронция и циркония лаки, соли и пигменты Ethanaminium, N-(4-((4-(diethylamino)phenyl)(5-hydroxy-2,4-disulfophenyl)methylene)-2,5-cyclohexadien-1-ylidene)-N-ethyl-, hydroxide, inner salt, calcium salt (2:1) and its insoluble barium, strontium and zirconium lakes, salts and pigments
- Other conditions
- (E131)
- Color Index
- 42051
Source: TR CU 009/2011 Annex 3 (Colorants) (Ref 60)
Frequently Asked Questions
Is CI 42051 banned in any country?
CI 42051 is not banned in any of the 26 markets tracked by Formpli. However, it may be subject to restrictions or conditions of use in some markets.
What are the restrictions on CI 42051 in cosmetics?
CI 42051 is restricted or has conditions of use in UAE, Armenia, Bahrain, Brazil, Belarus, European Union, Indonesia, Kyrgyzstan, Kuwait, Kazakhstan, Malaysia, Oman, Philippines, Qatar, Russia, Saudi Arabia, Singapore, Thailand, Taiwan, United Kingdom, Vietnam. Restrictions may include maximum concentration limits, product type limitations, or mandatory labeling requirements. See the detailed regulations above for specifics.
Can I use CI 42051 in cosmetics?
CI 42051 is regulated in 21 markets. It has restrictions in UAE, Armenia, Bahrain, Brazil, Belarus, European Union, Indonesia, Kyrgyzstan, Kuwait, Kazakhstan, Malaysia, Oman, Philippines, Qatar, Russia, Saudi Arabia, Singapore, Thailand, Taiwan, United Kingdom, Vietnam. Use Formpli's free screening tool to check your full ingredient list against all 26 markets at once.
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Check Ingredients FreeThis information is for reference only and does not constitute legal or regulatory advice. Regulations change — always verify with official sources and consult a regulatory specialist before exporting cosmetic products. Data sourced from EU COSING, US FDA, Health Canada, MHLW Japan, MFDS Korea, ASEAN ACD, GCC SFDA, TGA Australia, ANVISA Brazil, EAEU TR CU, and Taiwan TFDA.