CI 42090

RestrictedCAS 3844-45-929 regulations across 21 markets

CI 42090 is a cosmetic ingredient classified as Colorant. Also known as BLUE 1 LAKE, CAS 3844-45-9. It is regulated in 21 markets including UAE, Armenia, Bahrain.

Also Known As

Common names
BLUE 1 LAKE, BLUE 4 LAKE, Blue No. 4, Blue No. 1
CAS Number
6371-85-3, 68921-42-6, 2650-18-2, 37307-56-5, 3844-45-9
INCI variants
BLUE 1, BLUE 4

Market Overview — 29 Markets

European Union2
United Kingdom2
United States
California
Maryland
Washington
Canada
Brazil
South Korea1
Japan
Taiwan1
Australia
Singapore1
Malaysia1
Thailand1
Indonesia1
Vietnam1
Philippines1
UAE2
Saudi Arabia2
Qatar2
Oman2
Kuwait2
Bahrain2
Russia1
Belarus1
Kazakhstan1
Armenia1
Kyrgyzstan1

Detailed Regulations

Europe4 regulations
European UnionRestrictedAnnex III #190
Chemical name
Benzenemethanaminium, N-ethyl-N-[4-[[4-[ethyl-[(3-sulfophenyl)-methyl]-amino]-phenyl](2-sulfophenyl)methylene]-2,5-cyclohexadien-1-ylidene]-3-sulfo, inner salts, disodium salt and its ammonium and aluminium salts (15); Acid Blue Acid Blue 9 Ammonium salt; CI 42090. (see note 17)
CAS
3844-45-9 - 2650-18-2 - 68921-42-6
Max concentration
0.5%
Product type
Hair dye substance in non-oxidative hair dye products

Source: EC 1223/2009 Annex III

European UnionRestrictedAnnex IV #63
Chemical name
Benzenemethanaminium, N-ethyl-N-(4-((4-(ethyl((3-sulfophenyl)methyl)amino)phenyl)(2-sulfophenyl)methylene)-2,5-cyclohexadien-1-ylidene)-3-sulfo-, hydroxide, inner salt, disodium salt
CAS
2650-18-2; 37307-56-5; 3844-45-9
Conditions of use
Purity criteria as sset out in Commission Directive 95/45/EC (E 133)
Color Index
CI 42090

Source: EC 1223/2009 Annex IV

United KingdomRestrictedAnnex III #190
Chemical name
Benzenemethanaminium, N-ethyl-N-[4-[[4-[ethyl-[(3-sulfophenyl)-methyl]-amino]-phenyl](2-sulfophenyl)methylene]-2,5-cyclohexadien-1-ylidene]-3-sulfo, inner salts, disodium salt and its ammonium and aluminium salts ; (CI 42090)
CAS
3844-45-9 / 2650-18-2 / 68921-42-6
Max concentration
0,5 %
Product type
Hair dye substance in non-oxidative hair dye products
Conditions of use
Max: 0,5 %

Source: UK retained EC 1223/2009 Annex III

United KingdomRestrictedAnnex IV #63
Chemical name
Benzene-methanaminium, N-ethyl-N-(4-((4-(ethyl((3-sulfophenyl)methyl)amino) phenyl)(2-sulfophenyl)methylene)-2,5-cyclohexadien-1-ylidene)-3-sulfo-, hydroxide, inner salt, disodium salt
Other conditions
Purity criteria as set out in Commission Directive 95/45/EC (E 133)
Color Index
42090

Source: UK retained EC 1223/2009 Annex IV

AmericasNo restrictions

No specific restrictions for CI 42090 in United States, California, Maryland, Washington, Canada, Brazil.

East Asia & Oceania2 regulations
South KoreaRestrictedAnnex restricted #M1431
Chemical name
Alphazurine FG, D&C Blue No. 4, Ao205, Acid Blue 9 Ammonium Salt, CI 42090

Source: MFDS Korea Cosmetics Regulation

TaiwanRestrictedAnnex Colorants List #63
Chemical name
CI 42090
Product type
Scope 1: All cosmetic products
Color Index
CI 42090

Source: TFDA Cosmetics Regulations

ASEAN6 regulations
SingaporeRestrictedAnnex ACD Annex IV (Colorants) #42090
Chemical name
Blue
Product type
All cosmetic products
Color Index
CI 42090

Source: ASEAN Cosmetic Directive (HSA Dec 2025)

MalaysiaRestrictedAnnex ACD Annex IV (Colorants) #42090
Chemical name
Blue
Product type
All cosmetic products
Color Index
CI 42090

Source: ASEAN Cosmetic Directive (HSA Dec 2025)

ThailandRestrictedAnnex ACD Annex IV (Colorants) #42090
Chemical name
Blue
Product type
All cosmetic products
Color Index
CI 42090

Source: ASEAN Cosmetic Directive (HSA Dec 2025)

IndonesiaRestrictedAnnex ACD Annex IV (Colorants) #42090
Chemical name
Blue
Product type
All cosmetic products
Color Index
CI 42090

Source: ASEAN Cosmetic Directive (HSA Dec 2025)

VietnamRestrictedAnnex ACD Annex IV (Colorants) #42090
Chemical name
Blue
Product type
All cosmetic products
Color Index
CI 42090

Source: ASEAN Cosmetic Directive (HSA Dec 2025)

PhilippinesRestrictedAnnex ACD Annex IV (Colorants) #42090
Chemical name
Blue
Product type
All cosmetic products
Color Index
CI 42090

Source: ASEAN Cosmetic Directive (HSA Dec 2025)

GCC12 regulations
UAERestrictedAnnex III #190
Chemical name
Benzenemethanaminium, N-ethyl-N-[4-[[4-[ethyl-[(3-sulfophenyl)-methyl]-amino]-phenyl](2-sulfophenyl)methylene]-2,5-cyclohexadien-1-ylidene]-3-sulfo, inner salts, disodium salt and its ammonium and aluminium salts (15); Acid Blue Acid Blue 9 Ammonium salt; CI 42090. (see note 17)
CAS
3844-45-9 - 2650-18-2 - 68921-42-6
Max concentration
0.5%
Product type
Hair dye substance in non-oxidative hair dye products

Source: GSO 1943:2024 (based on EU 1223/2009 III)

UAERestrictedAnnex IV #63
Chemical name
Benzenemethanaminium, N-ethyl-N-(4-((4-(ethyl((3-sulfophenyl)methyl)amino)phenyl)(2-sulfophenyl)methylene)-2,5-cyclohexadien-1-ylidene)-3-sulfo-, hydroxide, inner salt, disodium salt
CAS
2650-18-2; 37307-56-5; 3844-45-9
Conditions of use
Purity criteria as sset out in Commission Directive 95/45/EC (E 133)
Color Index
CI 42090

Source: GSO 1943:2024 (based on EU 1223/2009 IV)

Saudi ArabiaRestrictedAnnex III #190
Chemical name
Benzenemethanaminium, N-ethyl-N-[4-[[4-[ethyl-[(3-sulfophenyl)-methyl]-amino]-phenyl](2-sulfophenyl)methylene]-2,5-cyclohexadien-1-ylidene]-3-sulfo, inner salts, disodium salt and its ammonium and aluminium salts (15); Acid Blue Acid Blue 9 Ammonium salt; CI 42090. (see note 17)
CAS
3844-45-9 - 2650-18-2 - 68921-42-6
Max concentration
0.5%
Product type
Hair dye substance in non-oxidative hair dye products

Source: GSO 1943:2024 (based on EU 1223/2009 III)

Saudi ArabiaRestrictedAnnex IV #63
Chemical name
Benzenemethanaminium, N-ethyl-N-(4-((4-(ethyl((3-sulfophenyl)methyl)amino)phenyl)(2-sulfophenyl)methylene)-2,5-cyclohexadien-1-ylidene)-3-sulfo-, hydroxide, inner salt, disodium salt
CAS
2650-18-2; 37307-56-5; 3844-45-9
Conditions of use
Purity criteria as sset out in Commission Directive 95/45/EC (E 133)
Color Index
CI 42090

Source: GSO 1943:2024 (based on EU 1223/2009 IV)

QatarRestrictedAnnex III #190
Chemical name
Benzenemethanaminium, N-ethyl-N-[4-[[4-[ethyl-[(3-sulfophenyl)-methyl]-amino]-phenyl](2-sulfophenyl)methylene]-2,5-cyclohexadien-1-ylidene]-3-sulfo, inner salts, disodium salt and its ammonium and aluminium salts (15); Acid Blue Acid Blue 9 Ammonium salt; CI 42090. (see note 17)
CAS
3844-45-9 - 2650-18-2 - 68921-42-6
Max concentration
0.5%
Product type
Hair dye substance in non-oxidative hair dye products

Source: GSO 1943:2024 (based on EU 1223/2009 III)

QatarRestrictedAnnex IV #63
Chemical name
Benzenemethanaminium, N-ethyl-N-(4-((4-(ethyl((3-sulfophenyl)methyl)amino)phenyl)(2-sulfophenyl)methylene)-2,5-cyclohexadien-1-ylidene)-3-sulfo-, hydroxide, inner salt, disodium salt
CAS
2650-18-2; 37307-56-5; 3844-45-9
Conditions of use
Purity criteria as sset out in Commission Directive 95/45/EC (E 133)
Color Index
CI 42090

Source: GSO 1943:2024 (based on EU 1223/2009 IV)

OmanRestrictedAnnex III #190
Chemical name
Benzenemethanaminium, N-ethyl-N-[4-[[4-[ethyl-[(3-sulfophenyl)-methyl]-amino]-phenyl](2-sulfophenyl)methylene]-2,5-cyclohexadien-1-ylidene]-3-sulfo, inner salts, disodium salt and its ammonium and aluminium salts (15); Acid Blue Acid Blue 9 Ammonium salt; CI 42090. (see note 17)
CAS
3844-45-9 - 2650-18-2 - 68921-42-6
Max concentration
0.5%
Product type
Hair dye substance in non-oxidative hair dye products

Source: GSO 1943:2024 (based on EU 1223/2009 III)

OmanRestrictedAnnex IV #63
Chemical name
Benzenemethanaminium, N-ethyl-N-(4-((4-(ethyl((3-sulfophenyl)methyl)amino)phenyl)(2-sulfophenyl)methylene)-2,5-cyclohexadien-1-ylidene)-3-sulfo-, hydroxide, inner salt, disodium salt
CAS
2650-18-2; 37307-56-5; 3844-45-9
Conditions of use
Purity criteria as sset out in Commission Directive 95/45/EC (E 133)
Color Index
CI 42090

Source: GSO 1943:2024 (based on EU 1223/2009 IV)

KuwaitRestrictedAnnex III #190
Chemical name
Benzenemethanaminium, N-ethyl-N-[4-[[4-[ethyl-[(3-sulfophenyl)-methyl]-amino]-phenyl](2-sulfophenyl)methylene]-2,5-cyclohexadien-1-ylidene]-3-sulfo, inner salts, disodium salt and its ammonium and aluminium salts (15); Acid Blue Acid Blue 9 Ammonium salt; CI 42090. (see note 17)
CAS
3844-45-9 - 2650-18-2 - 68921-42-6
Max concentration
0.5%
Product type
Hair dye substance in non-oxidative hair dye products

Source: GSO 1943:2024 (based on EU 1223/2009 III)

KuwaitRestrictedAnnex IV #63
Chemical name
Benzenemethanaminium, N-ethyl-N-(4-((4-(ethyl((3-sulfophenyl)methyl)amino)phenyl)(2-sulfophenyl)methylene)-2,5-cyclohexadien-1-ylidene)-3-sulfo-, hydroxide, inner salt, disodium salt
CAS
2650-18-2; 37307-56-5; 3844-45-9
Conditions of use
Purity criteria as sset out in Commission Directive 95/45/EC (E 133)
Color Index
CI 42090

Source: GSO 1943:2024 (based on EU 1223/2009 IV)

BahrainRestrictedAnnex III #190
Chemical name
Benzenemethanaminium, N-ethyl-N-[4-[[4-[ethyl-[(3-sulfophenyl)-methyl]-amino]-phenyl](2-sulfophenyl)methylene]-2,5-cyclohexadien-1-ylidene]-3-sulfo, inner salts, disodium salt and its ammonium and aluminium salts (15); Acid Blue Acid Blue 9 Ammonium salt; CI 42090. (see note 17)
CAS
3844-45-9 - 2650-18-2 - 68921-42-6
Max concentration
0.5%
Product type
Hair dye substance in non-oxidative hair dye products

Source: GSO 1943:2024 (based on EU 1223/2009 III)

BahrainRestrictedAnnex IV #63
Chemical name
Benzenemethanaminium, N-ethyl-N-(4-((4-(ethyl((3-sulfophenyl)methyl)amino)phenyl)(2-sulfophenyl)methylene)-2,5-cyclohexadien-1-ylidene)-3-sulfo-, hydroxide, inner salt, disodium salt
CAS
2650-18-2; 37307-56-5; 3844-45-9
Conditions of use
Purity criteria as sset out in Commission Directive 95/45/EC (E 133)
Color Index
CI 42090

Source: GSO 1943:2024 (based on EU 1223/2009 IV)

EAEU5 regulations
RussiaRestrictedAnnex 3 #63
Chemical name
Бензол-метанаминиум, N-этил-N-(4-((4-(этил((3-сульфофенил)метил)амино)фенил)(2-сульфофенил)метилен)-2,5-циклогексадиен-1-илиден)-3-сульфо-, гидроксид, внутренняя соль, динатриевая соль Benzene-methanaminium, N-ethyl-N-(4-((4-(ethyl((3-sulfophenyl)methyl)amino)phenyl)(2-sulfophenyl)methylene)-2,5-cyclohexadien-1-ylidene)-3-sulfo-, hydroxide, inner salt, disodium salt
Other conditions
(E133)/EC (E133)
Color Index
42090

Source: TR CU 009/2011 Annex 3 (Colorants) (Ref 63)

BelarusRestrictedAnnex 3 #63
Chemical name
Бензол-метанаминиум, N-этил-N-(4-((4-(этил((3-сульфофенил)метил)амино)фенил)(2-сульфофенил)метилен)-2,5-циклогексадиен-1-илиден)-3-сульфо-, гидроксид, внутренняя соль, динатриевая соль Benzene-methanaminium, N-ethyl-N-(4-((4-(ethyl((3-sulfophenyl)methyl)amino)phenyl)(2-sulfophenyl)methylene)-2,5-cyclohexadien-1-ylidene)-3-sulfo-, hydroxide, inner salt, disodium salt
Other conditions
(E133)/EC (E133)
Color Index
42090

Source: TR CU 009/2011 Annex 3 (Colorants) (Ref 63)

KazakhstanRestrictedAnnex 3 #63
Chemical name
Бензол-метанаминиум, N-этил-N-(4-((4-(этил((3-сульфофенил)метил)амино)фенил)(2-сульфофенил)метилен)-2,5-циклогексадиен-1-илиден)-3-сульфо-, гидроксид, внутренняя соль, динатриевая соль Benzene-methanaminium, N-ethyl-N-(4-((4-(ethyl((3-sulfophenyl)methyl)amino)phenyl)(2-sulfophenyl)methylene)-2,5-cyclohexadien-1-ylidene)-3-sulfo-, hydroxide, inner salt, disodium salt
Other conditions
(E133)/EC (E133)
Color Index
42090

Source: TR CU 009/2011 Annex 3 (Colorants) (Ref 63)

ArmeniaRestrictedAnnex 3 #63
Chemical name
Бензол-метанаминиум, N-этил-N-(4-((4-(этил((3-сульфофенил)метил)амино)фенил)(2-сульфофенил)метилен)-2,5-циклогексадиен-1-илиден)-3-сульфо-, гидроксид, внутренняя соль, динатриевая соль Benzene-methanaminium, N-ethyl-N-(4-((4-(ethyl((3-sulfophenyl)methyl)amino)phenyl)(2-sulfophenyl)methylene)-2,5-cyclohexadien-1-ylidene)-3-sulfo-, hydroxide, inner salt, disodium salt
Other conditions
(E133)/EC (E133)
Color Index
42090

Source: TR CU 009/2011 Annex 3 (Colorants) (Ref 63)

KyrgyzstanRestrictedAnnex 3 #63
Chemical name
Бензол-метанаминиум, N-этил-N-(4-((4-(этил((3-сульфофенил)метил)амино)фенил)(2-сульфофенил)метилен)-2,5-циклогексадиен-1-илиден)-3-сульфо-, гидроксид, внутренняя соль, динатриевая соль Benzene-methanaminium, N-ethyl-N-(4-((4-(ethyl((3-sulfophenyl)methyl)amino)phenyl)(2-sulfophenyl)methylene)-2,5-cyclohexadien-1-ylidene)-3-sulfo-, hydroxide, inner salt, disodium salt
Other conditions
(E133)/EC (E133)
Color Index
42090

Source: TR CU 009/2011 Annex 3 (Colorants) (Ref 63)

Frequently Asked Questions

Is CI 42090 banned in any country?

CI 42090 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 42090 in cosmetics?

CI 42090 is restricted or has conditions of use in UAE, Armenia, Bahrain, Belarus, European Union, Indonesia, Kyrgyzstan, South Korea, 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 42090 in cosmetics?

CI 42090 is regulated in 21 markets. It has restrictions in UAE, Armenia, Bahrain, Belarus, European Union, Indonesia, Kyrgyzstan, South Korea, 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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This 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.