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3,3'-二甲氧基联苯胺及其盐类 — 3,3’-Dimethoxybenzidine （ortho-Dianisidine） （CAS No. 119-90-4） and its salts

3,3’-Dimethoxybenzidine （ortho-Dianisidine） （CAS No. 119-90-4） and its salts

The NMPA binding 2021 catalogue prohibits this raw material in cosmetic formulas in China.

All China recordsCompare all marketsOpen official source

Regulatory decision and full conditions

Status
Prohibited
Legal role
Binding rule
Regulatory summary
The NMPA binding 2021 catalogue prohibits this raw material in cosmetic formulas in China.
Conditions and restrictions
Prohibited in cosmetic product formulas. Verify the cited Chinese source identity and any later NMPA amendment before use.

Substance identity

Official source name
3,3'-二甲氧基联苯胺及其盐类 — 3,3’-Dimethoxybenzidine （ortho-Dianisidine） （CAS No. 119-90-4） and its salts
CAS
119-90-4
EC
Not supplied in this source row
Identity mapping
standalone:official_nmpa_record
Search this identity across the siteCAS 119-90-4

Cross-market snapshot for this identity

Exact linked records currently present in this site. An absent market means no imported exact match, not permission to use the substance.

9 market datasets
PubChem 2D chemical structure for CAS 119-90-4
CAS 119-90-4PubChem CID 8411

Verified chemistry for CAS 119-90-4

Dianisidine

IUPAC name
4-(4-amino-3-methoxyphenyl)-2-methoxyaniline
Molecular formula
C14H16N2O2
Molecular weight
244.29 g/mol
Exact mass
244.121177757 Da
Monoisotopic mass
244.121177757 Da
XLogP3
2.2
Topological polar surface area
70.5 Ų
Molecular complexity
236.0
Formal charge
0
Hydrogen-bond donors
2
Hydrogen-bond acceptors
4
Rotatable bonds
3
Heavy atoms
18
Covalent units
1

Names and synonyms reported to PubChem

o-Dianisidine3,3'-DIMETHOXYBENZIDINEBlue Base NBFast Blue B BaseCellitazol BMitsui Blue B Baseortho-DianisidineAzogene Fast Blue B
16 more reported names
Diacel Navy DCNeutrosel navy bnDisperse Black 6Blue BN BaseBlue Base irga BSpectrolene Blue BFast Blue Base BLake Blue B Baseo-DianisidinaDiato Blue Base BDiazo Fast Blue Bo-DianisidinAzofix Blue B SaltKayaku Blue B BaseFast Blue DSC BaseSetacyl Diazo Navy R
Open full PubChem recordSafety and hazards at PubChemPubChem annotationsChemical classifications3D structure image
External database identifiers
Advanced structure statistics
Defined atom stereocentres
0
Undefined atom stereocentres
0
Defined bond stereocentres
0
Undefined bond stereocentres
0
3D pharmacophore features
8
3D rings
2
3D hydrophobes
0
3D acceptor features
2
3D donor features
2
3D anionic centres
0
3D cationic centres
2
3D conformers
8
Effective 3D rotors
3.0
Machine-readable structure identifiers
SMILES
COC1=C(C=CC(=C1)C2=CC(=C(C=C2)N)OC)N
InChI
InChI=1S/C14H16N2O2/c1-17-13-7-9(3-5-11(13)15)10-4-6-12(16)14(8-10)18-2/h3-8H,15-16H2,1-2H3
InChIKey
JRBJSXQPQWSCCF-UHFFFAOYSA-N

Evidence from additional scientific databases

NIH PubChem PUG-View
Exact identifier match8411

Attributed physical-property, hazard, environmental and use annotations.

  • First Aid: EYES: First check the victim for contact lenses and remove if present. Flush victim's eyes with water or normal saline solution for 20 to 30 minutes while simultaneously calling a hospital or poison control center. Do not put any ointments, oils, or medication in the victim's eyes without specific instructions from a physician. IMMEDIATELY transport the victim after flushing eyes to a hospital even if no symptoms (such as redness or irritation) develop.; SKIN: IMMEDIATELY flood affected skin with water while removing and isolating all contaminated clothing. Gently wash all affected skin areas thoroughly with soap and water. IMMEDIATELY call a hospital or poison control center even if no symptoms (such as redness or irritation) develop. IMMEDIATELY transport the victim to a hospital for treatment after washing the affected areas.; INHALATION: IMMEDIATELY leave the contaminated area; take deep breaths of fresh air. IMMEDIATELY call a physician and be prepared to transport the victim to a hospital even if no symptoms (such as wheezing, coughing, shortness of breath, or burning in the mouth, throat, or chest) develop. Provide proper respiratory protection to rescuers entering an unknow Source: CAMEO Chemicals
  • First Aid: (General first aid procedures); Eye: Irrigate immediately - If this chemical contacts the eyes, immediately wash (irrigate) the eyes with large amounts of water, occasionally lifting the lower and upper lids. Get medical attention immediately.; Skin: Soap wash immediately - If this chemical contacts the skin, immediately wash the contaminated skin with soap and water. If this chemical penetrates the clothing, immediately remove the clothing, wash the skin with soap and water, and get medical attention promptly.; Breathing: Respiratory support; Swallow: Medical attention immediately - If this chemical has been swallowed, get medical attention immediately. Source: The National Institute for Occupational Safety and Health (NIOSH)
  • Signal: Danger Source: Regulation (EC) No 1272/2008 of the European Parliament and of the Council
  • GHS Hazard Statements: H302: Harmful if swallowed [Warning Acute toxicity, oral]; H350: May cause cancer [Danger Carcinogenicity] Source: Regulation (EC) No 1272/2008 of the European Parliament and of the Council
  • Precautionary Statement Codes: P203, P264, P270, P280, P301+P317, P318, P330, P405, and P501 (click each P-code to see the statement) Source: Regulation (EC) No 1272/2008 of the European Parliament and of the Council
  • Signal: Danger Source: European Chemicals Agency (ECHA)
  • GHS Hazard Statements: H302 (100%): Harmful if swallowed [Warning Acute toxicity, oral]; H350 (100%): May cause cancer [Danger Carcinogenicity] Source: European Chemicals Agency (ECHA)
  • Precautionary Statement Codes: P203, P264, P270, P280, P301+P317, P318, P330, P405, and P501 (click each P-code to see the statement) Source: European Chemicals Agency (ECHA)
  • ECHA C&L Notifications Summary: Aggregated GHS information provided per 50 reports by companies from 5 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.; Information may vary between notifications depending on impurities, additives, and other factors. The percentage value in parenthesis indicates the notified classification ratio from companies that provide hazard codes. Only hazard codes with percentage values above 10% are shown. For more detailed information, please visit ECHA C&L website. Source: European Chemicals Agency (ECHA)
  • Signal: Danger Source: NITE-CMC
  • GHS Hazard Statements: H302: Harmful if swallowed [Warning Acute toxicity, oral]; H341: Suspected of causing genetic defects [Warning Germ cell mutagenicity]; H350: May cause cancer [Danger Carcinogenicity]; H372: Causes damage to organs through prolonged or repeated exposure [Danger Specific target organ toxicity, repeated exposure] Source: NITE-CMC
  • Precautionary Statement Codes: P203, P260, P264, P270, P280, P301+P317, P318, P319, P330, P405, and P501 (click each P-code to see the statement) Source: NITE-CMC
  • Signal: Warning Source: NITE-CMC
  • GHS Hazard Statements: H302: Harmful if swallowed [Warning Acute toxicity, oral]; H341: Suspected of causing genetic defects [Warning Germ cell mutagenicity]; H351: Suspected of causing cancer [Warning Carcinogenicity]; H373: May causes damage to organs through prolonged or repeated exposure [Warning Specific target organ toxicity, repeated exposure] Source: NITE-CMC
  • NFPA Health Rating: 0 - Materials that, under emergency conditions, would offer no hazard beyond that of ordinary combustible materials. Source: Hazardous Substances Data Bank (HSDB)
  • NFPA Fire Rating: 1 - Materials that must be preheated before ignition can occur. Materials require considerable preheating, under all ambient temperature conditions, before ignition and combustion can occur. Source: Hazardous Substances Data Bank (HSDB)
  • NFPA Instability Rating: 0 - Materials that in themselves are normally stable, even under fire conditions. Source: Hazardous Substances Data Bank (HSDB)
  • Environmental Bioconcentration: An estimated BCF of 5 was calculated for 3,3'-dimethoxybenzidine(SRC), using a log Kow of 1.81(1) and a regression-derived equation(2). According to a classification scheme(3), this BCF suggests the potential for bioconcentration in aquatic organisms is low(SRC). Source: Hazardous Substances Data Bank (HSDB)
  • Environmental Fate: TERRESTRIAL FATE: Based on a classification scheme(1), an estimated Koc value of 230(SRC), determined from a log Kow of 1.81(2) and a regression-derived equation(3), indicates that 3,3'-dimethoxybenzidine is expected to have moderate mobility in soil(SRC). The first pKa of 3,3'-dimethoxybenzidine is estimated as 4.2(SRC), using an estimation method based on perturbed molecular orbital theory and linear free energy (LFER) methods(4). This estimated pKa indicates that 3,3'-dimethoxybenzidine will partially exist in the protonated form under acidic conditions and cations have greater adsorption to soils than neutral molecules(SRC). Furthermore, 3,3'-dimethoxybenzidine is an aromatic amine which may form covalent bonds with humic materials resulting in relatively immobile quinone-like complexes(5). Volatilization of the neutral species of 3,3'-dimethoxybenzidine from moist soil surfaces is not expected to be an important fate process(SRC) based upon an estimated Henry's Law constant of 4.7X10-11 atm-cu m/mole(SRC), developed using a fragment constant estimation method(6). The conjugate acid of 3,3-dimethoxybenzidine will not volatilize since cations are non-volatile(SRC). 3,3'-Dimethox Source: Hazardous Substances Data Bank (HSDB)
  • Environmental Fate: AQUATIC FATE: Based on a classification scheme(1), an estimated Koc value of 230(SRC), determined from a log Kow of 1.81(2) and a regression-derived equation(3), indicates that 3,3'-dimethoxybenzidine is expected to adsorb to suspended solids and sediment(SRC). The frist pKa of 3,3'-dimethoxybenzidine is estimated as 4.2(SRC), using an estimation method based on perturbed molecular orbital theory and linear free energy (LFER) methods(4). This estimated pKa indicates that 3,3'-dimethoxybenzidine will partially exist in the protonated form under acidic conditions and cations have greater adsorption to suspended solids and sediment than neutral molecules(SRC). Volatilization of the free base from water surfaces is not expected(3) based upon an estimated Henry's Law constant of 4.7X10-11 atm-cu m/mole(SRC), developed using a fragment constant estimation method(5). The conjugate acid of 3,3'-dimethoxybenzidine will not volatilize since cations are non-volatile(SRC). According to a classification scheme(6), an estimated BCF of 5(SRC), from its log Kow(2) and a regression-derived equation(7), suggests the potential for bioconcentration in aquatic organisms is low(SRC). No information on t Source: Hazardous Substances Data Bank (HSDB)
  • Environmental Fate: ATMOSPHERIC FATE: According to a model of gas/particle partitioning of semivolatile organic compounds in the atmosphere(1), 3,3'-dimethoxybenzidine, which has an estimated vapor pressure of 1.2X10-7 mm Hg at 25 °C(SRC), determined from a fragment constant method(2), is expected to exist in both the vapor and particulate phases in the ambient atmosphere. Vapor-phase 3,3'-dimethoxybenzidine is degraded in the atmosphere by reaction with photochemically-produced hydroxyl radicals(SRC); the half-life for this reaction in air is estimated to be 3 hours(SRC), calculated from its rate constant of 1.3X10-10 cu cm/molecule-sec at 25 °C (SRC)determined using a structure estimation method(3). Since 3,3'-dimethoxybenzidine absorbs light greater than 290 nm(4), it may be susceptible to direct photolysis in the environment(SRC). Particulate-phase 3,3'-dimethoxybenzidine may be removed from the air by wet and dry deposition(SRC). Source: Hazardous Substances Data Bank (HSDB)

Mapped by: Existing checksum-valid CAS to unique PubChem CID match. Retrieved: 2026-08-31. Open source record

Scientific classifications and hazard annotations provide context and do not replace the market-specific regulatory decision shown above.

Additional source coverage and match status
SourceResultChecked
NIH PubChem PUG-ViewExact match2026-08-31

A recorded no-match is useful evidence that the source was checked; it is not a claim that the substance does not exist elsewhere.

Retrieved from NIH PubChem on 2026-08-31 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.

Official source and provenance

Registered source
China NMPA banned raw-material catalogues (2021)
Source reference
NMPA 2021 Catalogue of Raw Materials Banned for Cosmetics, entry 146
Source record ID
chemical-146
Source version
NMPA Announcement No. 74 of 2021, effective 2021-05-26
Source language
Chinese with source English/Latin identity
Translation status
Official English translation · English translation
Effective date
2021-05-26
Source updated
2021-05-26
Snapshot checked
2026-08-31 14:13 UTC
Validation method
pdfplumber tables; exact 1,284 + 109 row counts and contiguous source numbering
SHA-256
8848aa3e0c7ac5e74f56fc27927336c4fc2e5bc80137da087c2ca9ba2d2c075e

Registered dataset notes

Dataset coverage
All 1,284 banned raw materials and 109 banned plant/animal raw materials effective from 26 May 2021
Authority note
Binding NMPA catalogues replacing Tables 1 and 2 of the 2015 Technical Specification
Inspect the exact official sourceRegulator guidance

How this record fits the market dataset

1393
current China records
1393
records marked Prohibited
1393
records from this source version
1249
market records with CAS identity

Status distribution

Prohibited: 1393

Condition text is present on 1393 of 1393 current records. An empty condition field is interpreted according to the record type above; it is never converted into an unrestricted-use claim.

China market context

Complete prohibited catalogues plus official-source workflow

Coverage version: NMPA 2021 banned catalogues plus dynamic IECIC List I/List II system current since 2025

All 1,284 banned raw materials and 109 banned plant/animal raw materials, plus the official workflow for the dynamic existing-ingredient inventory, other technical restrictions and new ingredients.

Verification checklist

  1. Search the current NMPA IECIC List I and List II by Chinese name and identity.
  2. Check prohibited/restricted and positive lists in the current Safety and Technical Standards.
  3. Review technical purpose, use history and any monitoring period.
  4. Confirm Chinese labelling, safety assessment and filing/registration duties.

Official market sources

Verification workflow and record completeness

Before using this result in a compliance decision

  1. Confirm that “3,3'-二甲氧基联苯胺及其盐类 — 3,3’-Dimethoxybenzidine （ortho-Dianisidine） （CAS No. 119-90-4） and its salts” and every CAS/EC identifier refer to the material in your supplier specification.
  2. Search the current NMPA IECIC List I and List II by Chinese name and identity.
  3. Check prohibited/restricted and positive lists in the current Safety and Technical Standards.
  4. Review technical purpose, use history and any monitoring period.
  5. Confirm Chinese labelling, safety assessment and filing/registration duties.
  6. Document the source version and recheck the regulator before manufacture, notification or market placement.

Fields available in this record

  • Official substance nameAvailable
  • CASAvailable
  • ECNot supplied
  • Separate condition textAvailable
  • Effective dateAvailable
  • Snapshot hash and methodAvailable

Questions this page answers

This official record identifies the substance as prohibited for cosmetic use in the stated market scope. Do not rely on a formulation containing this identity until the cited source, effective date and exact substance match have been verified.

A prohibition entry may contain no separate condition text because the regulatory outcome is the prohibition itself. IECIC listing is not blanket approval; absence may require the new cosmetic ingredient route, and restrictions are checked separately.

The record cites NMPA 2021 Catalogue of Raw Materials Banned for Cosmetics, entry 146, source version NMPA Announcement No. 74 of 2021, effective 2021-05-26. Open the official source.

No. CAS helps resolve identity, but jurisdictions can classify the same substance differently and can apply different product scopes, limits, warnings and transition dates.

Stable citation

3,3'-二甲氧基联苯胺及其盐类 — 3,3’-Dimethoxybenzidine （ortho-Dianisidine） （CAS No. 119-90-4） and its salts. NMPA 2021 Catalogue of Raw Materials Banned for Cosmetics, entry 146. China. Source version NMPA Announcement No. 74 of 2021, effective 2021-05-26. CosIng Checker regulatory record: https://cosingchecker.com/regulations/cn/records/11835/

Cite the regulator as the legal authority. This page is a structured evidence index and verification aid, not a substitute for the official text or professional legal assessment.

Interpretation and limits for China

This official record identifies the substance as prohibited for cosmetic use in the stated market scope.

Do not rely on a formulation containing this identity until the cited source, effective date and exact substance match have been verified.

How to interpret the legal role

The cited row forms part of a binding rule or legally incorporated list for this market.

Evidence on this page

  • Recorded outcome: Prohibited
  • Legal role: Binding rule
  • Source version: NMPA Announcement No. 74 of 2021, effective 2021-05-26
  • Effective date: 2021-05-26

What it does not prove

IECIC listing is not blanket approval; absence may require the new cosmetic ingredient route, and restrictions are checked separately.

Further authoritative substance research

These sources can add identity, safety, exposure or hazard context. A link is not evidence that the database contains this exact substance, and none of these sources overrides the market decision above.

Cosmetic Ingredient Review safety assessments

Expert Panel conclusions, assessed ingredient groups, use conditions, dates and report documents

Independent expert review considered by FDA; not a government approval or binding market rule

Research this identity at the source

FDA Global Substance Registration System

UNII identifiers, preferred names, substance types, codes and public substance relationships

Identity registry only; UNII availability does not imply FDA review or approval

Research this identity at the source

ILO/WHO International Chemical Safety Cards

Hazards, symptoms, first aid, storage, incompatibilities and physical properties for covered chemicals

International occupational chemical-safety reference; not cosmetic-use approval

Research this identity at the source

Japan NITE-CHRIP

Chemical identity, Japanese and foreign legal lists, GHS hazards and exposure-related information

Chemical-management evidence; cosmetic status remains governed by the applicable MHLW standard and market rules

Research this identity at the source

NIOSH Pocket Guide to Chemical Hazards

REL, PEL, IDLH, properties, exposure routes, symptoms, target organs, first aid and measurement methods for covered workplace chemicals

US occupational-health guidance and limits; not a cosmetic ingredient decision

Research this identity at the source

OECD eChemPortal

Gateway to authority-owned physical-property, fate, ecotoxicity, toxicity, exposure and GHS records

Discovery gateway; each linked authority remains responsible for its data

Research this identity at the source

US EPA CompTox CTX APIs

API key required for import

DTXSID identity, experimental and predicted properties, toxicity, bioactivity, exposure and environmental data

Scientific and computational evidence; predictions must remain labelled and do not determine cosmetic legality

Research this identity at the source