ACID RED 51

BannedCAS 16423-68-022 regulations across 14 markets

ACID RED 51 is a cosmetic ingredient classified as Colorant. Also known as CAS 16423-68-0. It is regulated in 14 markets including UAE, Bahrain, European Union.

Also Known As

CAS Number
12227-78-0, 16423-68-0, 1342-25-2

Market Overview — 29 Markets

European Union2
United Kingdom2
United States
California
Maryland
Washington
Canada
Brazil
South Korea
Japan
Taiwan
Australia
Singapore1
Malaysia1
Thailand1
Indonesia1
Vietnam1
Philippines1
UAE2
Saudi Arabia2
Qatar2
Oman2
Kuwait2
Bahrain2
Russia
Belarus
Kazakhstan
Armenia
Kyrgyzstan

Detailed Regulations

Europe4 regulations
European UnionBannedAnnex II #1337
Chemical name
2',4',5',7'-Tetraiodofluorescein, its disodium salt (Acid Red 51; CI 45430) and its aluminium salt (Pigment Red 172 Aluminium lake)
CAS
15905-32-5 -- 16423-68-0 -- 12227-78-0
Product type
hair dye products

Source: EC 1223/2009 Annex II

European UnionRestrictedAnnex IV #80
Chemical name
Disodium 2-(2,4,5,7-tetraiodo-6-oxido-3-oxoxanthen-9-yl)benzoate and its insoluble barium, strontium and zirconium lakes, salts and pigments
CAS
12227-78-0
Conditions of use
Purity criteria as set out in Commission Directive 95/45/EC (E 127)
Color Index
CI 45430

Source: EC 1223/2009 Annex IV

United KingdomBannedAnnex II #1337
Chemical name
2′,4′,5′,7′-Tetraiodofluorescein, its disodium salt (Acid Red 51; CI 45430) and its aluminium salt (Pigment Red 172 Aluminium lake) when used as a substance in hair dye products
CAS
15905-32-5 / 16423-68-0 (Na) / 12227-78-0 (Al)

Source: UK retained EC 1223/2009 Annex II

United KingdomRestrictedAnnex IV #80
Chemical name
Disodium 2-(2,4,5,7-tetraiodo-6-oxido-3-oxoxanthen-9-yl)benzoate 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 127)
Color Index
45430

Source: UK retained EC 1223/2009 Annex IV

AmericasNo restrictions

No specific restrictions for ACID RED 51 in United States, California, Maryland, Washington, Canada, Brazil.

East Asia & OceaniaNo restrictions

No specific restrictions for ACID RED 51 in South Korea, Japan, Taiwan, Australia.

ASEAN6 regulations
SingaporeBannedAnnex ACD Annex II (Prohibited) #1337
Chemical name
2',4',5',7'-Tetraiodofluorescein , its disodium salt and its aluminium salt
CAS
15905-32- 5/16423-68- 0/12227-78-0
Product type
hair dye products

Source: ASEAN Cosmetic Directive (HSA Dec 2025)

MalaysiaBannedAnnex ACD Annex II (Prohibited) #1337
Chemical name
2',4',5',7'-Tetraiodofluorescein , its disodium salt and its aluminium salt
CAS
15905-32- 5/16423-68- 0/12227-78-0
Product type
hair dye products

Source: ASEAN Cosmetic Directive (HSA Dec 2025)

ThailandBannedAnnex ACD Annex II (Prohibited) #1337
Chemical name
2',4',5',7'-Tetraiodofluorescein , its disodium salt and its aluminium salt
CAS
15905-32- 5/16423-68- 0/12227-78-0
Product type
hair dye products

Source: ASEAN Cosmetic Directive (HSA Dec 2025)

IndonesiaBannedAnnex ACD Annex II (Prohibited) #1337
Chemical name
2',4',5',7'-Tetraiodofluorescein , its disodium salt and its aluminium salt
CAS
15905-32- 5/16423-68- 0/12227-78-0
Product type
hair dye products

Source: ASEAN Cosmetic Directive (HSA Dec 2025)

VietnamBannedAnnex ACD Annex II (Prohibited) #1337
Chemical name
2',4',5',7'-Tetraiodofluorescein , its disodium salt and its aluminium salt
CAS
15905-32- 5/16423-68- 0/12227-78-0
Product type
hair dye products

Source: ASEAN Cosmetic Directive (HSA Dec 2025)

PhilippinesBannedAnnex ACD Annex II (Prohibited) #1337
Chemical name
2',4',5',7'-Tetraiodofluorescein , its disodium salt and its aluminium salt
CAS
15905-32- 5/16423-68- 0/12227-78-0
Product type
hair dye products

Source: ASEAN Cosmetic Directive (HSA Dec 2025)

GCC12 regulations
UAEBannedAnnex II #1337
Chemical name
2',4',5',7'-Tetraiodofluorescein, its disodium salt (Acid Red 51; CI 45430) and its aluminium salt (Pigment Red 172 Aluminium lake)
CAS
15905-32-5 -- 16423-68-0 -- 12227-78-0
Product type
hair dye products

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

UAERestrictedAnnex IV #80
Chemical name
Disodium 2-(2,4,5,7-tetraiodo-6-oxido-3-oxoxanthen-9-yl)benzoate and its insoluble barium, strontium and zirconium lakes, salts and pigments
CAS
12227-78-0
Conditions of use
Purity criteria as set out in Commission Directive 95/45/EC (E 127)
Color Index
CI 45430

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

Saudi ArabiaBannedAnnex II #1337
Chemical name
2',4',5',7'-Tetraiodofluorescein, its disodium salt (Acid Red 51; CI 45430) and its aluminium salt (Pigment Red 172 Aluminium lake)
CAS
15905-32-5 -- 16423-68-0 -- 12227-78-0
Product type
hair dye products

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

Saudi ArabiaRestrictedAnnex IV #80
Chemical name
Disodium 2-(2,4,5,7-tetraiodo-6-oxido-3-oxoxanthen-9-yl)benzoate and its insoluble barium, strontium and zirconium lakes, salts and pigments
CAS
12227-78-0
Conditions of use
Purity criteria as set out in Commission Directive 95/45/EC (E 127)
Color Index
CI 45430

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

QatarBannedAnnex II #1337
Chemical name
2',4',5',7'-Tetraiodofluorescein, its disodium salt (Acid Red 51; CI 45430) and its aluminium salt (Pigment Red 172 Aluminium lake)
CAS
15905-32-5 -- 16423-68-0 -- 12227-78-0
Product type
hair dye products

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

QatarRestrictedAnnex IV #80
Chemical name
Disodium 2-(2,4,5,7-tetraiodo-6-oxido-3-oxoxanthen-9-yl)benzoate and its insoluble barium, strontium and zirconium lakes, salts and pigments
CAS
12227-78-0
Conditions of use
Purity criteria as set out in Commission Directive 95/45/EC (E 127)
Color Index
CI 45430

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

OmanBannedAnnex II #1337
Chemical name
2',4',5',7'-Tetraiodofluorescein, its disodium salt (Acid Red 51; CI 45430) and its aluminium salt (Pigment Red 172 Aluminium lake)
CAS
15905-32-5 -- 16423-68-0 -- 12227-78-0
Product type
hair dye products

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

OmanRestrictedAnnex IV #80
Chemical name
Disodium 2-(2,4,5,7-tetraiodo-6-oxido-3-oxoxanthen-9-yl)benzoate and its insoluble barium, strontium and zirconium lakes, salts and pigments
CAS
12227-78-0
Conditions of use
Purity criteria as set out in Commission Directive 95/45/EC (E 127)
Color Index
CI 45430

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

KuwaitBannedAnnex II #1337
Chemical name
2',4',5',7'-Tetraiodofluorescein, its disodium salt (Acid Red 51; CI 45430) and its aluminium salt (Pigment Red 172 Aluminium lake)
CAS
15905-32-5 -- 16423-68-0 -- 12227-78-0
Product type
hair dye products

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

KuwaitRestrictedAnnex IV #80
Chemical name
Disodium 2-(2,4,5,7-tetraiodo-6-oxido-3-oxoxanthen-9-yl)benzoate and its insoluble barium, strontium and zirconium lakes, salts and pigments
CAS
12227-78-0
Conditions of use
Purity criteria as set out in Commission Directive 95/45/EC (E 127)
Color Index
CI 45430

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

BahrainBannedAnnex II #1337
Chemical name
2',4',5',7'-Tetraiodofluorescein, its disodium salt (Acid Red 51; CI 45430) and its aluminium salt (Pigment Red 172 Aluminium lake)
CAS
15905-32-5 -- 16423-68-0 -- 12227-78-0
Product type
hair dye products

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

BahrainRestrictedAnnex IV #80
Chemical name
Disodium 2-(2,4,5,7-tetraiodo-6-oxido-3-oxoxanthen-9-yl)benzoate and its insoluble barium, strontium and zirconium lakes, salts and pigments
CAS
12227-78-0
Conditions of use
Purity criteria as set out in Commission Directive 95/45/EC (E 127)
Color Index
CI 45430

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

EAEUNo restrictions

No specific restrictions for ACID RED 51 in Russia, Belarus, Kazakhstan, Armenia, Kyrgyzstan.

Frequently Asked Questions

Is ACID RED 51 banned in any country?

Yes, ACID RED 51 is banned in UAE, Bahrain, European Union, Indonesia, Kuwait, Malaysia, Oman, Philippines, Qatar, Saudi Arabia, Singapore, Thailand, United Kingdom, Vietnam. Always check current regulations before formulating products for these markets.

What are the restrictions on ACID RED 51 in cosmetics?

ACID RED 51 is restricted or has conditions of use in UAE, Bahrain, European Union, Kuwait, Oman, Qatar, Saudi Arabia, United Kingdom. Restrictions may include maximum concentration limits, product type limitations, or mandatory labeling requirements. See the detailed regulations above for specifics.

Can I use ACID RED 51 in cosmetics?

ACID RED 51 is regulated in 14 markets. It is banned in UAE, Bahrain, European Union, Indonesia, Kuwait, Malaysia, Oman, Philippines, Qatar, Saudi Arabia, Singapore, Thailand, United Kingdom, Vietnam. It has restrictions in UAE, Bahrain, European Union, Kuwait, Oman, Qatar, Saudi Arabia, United Kingdom. Use Formpli's free screening tool to check your full ingredient list against all 26 markets at once.

Screen ACID RED 51 with your full formula

Paste your entire ingredient list and get a compliance report across 26 markets — free, no signup.

Check Ingredients Free

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.