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Ingredients

Ingredient Dictionary

GUANIDINE HCL

Molecular structure

Definition

US FDA substance register · UNII 3YQC9ZY4YB · registered name Guanidine Hydrochloride · single chemical substance

Source: US FDA Unique Ingredient Identifier (UNII)

Cosmetic roles

Keeps pH steadyBUFFERING

Safety & regulatory references

Not classified under Korea’s toxic-substance GHS list · existing chemical substance

Source: Korea toxic substances GHS register (NIER)

More data — names, identifiers, properties, test records, literature

Official labels & definitions

JCIA labelling name グアニジンHCl: 本品は、グアニジンの塩酸塩であり、次の化学式で表される。

Source: JCIA labelling names (Japan)

Names & identifiers

GUANIDINE HCLINCI구아니딘에이치씨엘Korean label name (MFDS standard)Guanidine, hydrochloride (1:1)SynonymグアニジンHClJapanese labelling name
CAS No.chemical registry number
50-01-1
EC No.EU chemical inventory number
200-002-3
DTXSIDUS EPA chemical ID
DTXSID7058757
DTXCIDUS EPA compound ID
DTXCID4040763
IUPAC
Guanidine--hydrogen chloride (1/1)
Molecular formula
CH6ClN3
Molecular weight
95.53 g/mol

Measured properties

Odour
odourless
pH
6.2
Melting/freezing point
178~185 ℃
Vapour pressure
0.00000176 ㎜Hg (25℃ (est.))
Water solubility
215 g/100㎖ (20℃)
Relative density
1.3
n-Octanol/water partition coefficient (Kow)
-1.7
Molecular weight
95.5

Values measured on the substance itself. The KOSHA data are a reference for writing and reviewing safety data sheets, not a specification for a commercial raw material.

Source: KOSHA safety data sheets (Korea)

What products actually use it for

What the 5 products reported to the US EPA with this ingredient use it for. Products outside cosmetics are included, so the top few rows are its main uses.

  • pH regulating agent2
  • Plating agent1
  • Flame retardant1
  • No specific technical function1

Source: US EPA CompTox dashboard

Irritation and sensitisation studies

6 skin studies and 4 eye studies are on record.

Classed as moderate1

The study conclusions largely agree (100%). These tests are on the raw material itself; irritation at the amount in a finished product is a different question.

See all 10 studies
  • Category 2
    Skin Irritation · Screening
  • Skin Irrit. 2
    Skin Irritation · Authoritative
  • Classification not possible
    Skin Sensitization · Screening
  • Category 8.2C (Category 1C)
    Skin Irritation · Read Across
  • Not likely to be sensitizing
    skin sensitisation: in vivo (non-LLNA) · Screening · equivalent or similar to OECD Guideline 406 (Skin Sensitisation) according to other guideline: EPA TS-792 Dermal sensitisation. Health effects test guidelines, EPA, August 1982; EPA 560/6-82-001
  • Severe Irritation
    skin irritation: in vivo · Screening · other guideline: EPA TS-792 Dermal irritation. Health effects test guidelines, EPA, August 1982; EPA 560/6-82-001 according to
  • Category 2A
    Eye Irritation · Screening
  • Eye Irrit. 2
    Eye Irritation · Authoritative
  • Category 8.3A (Category 1)
    Eye Irritation · Read Across
  • Severe Irritation
    eye irritation: in vivo · Screening · other guideline: EPA 560/6-82-001 (Primary Eye Irritation), August 1982 according to OECD Guideline 405 (Acute Eye Irritation / Corrosion) equivalent or similar to

Source: US EPA CompTox dashboard

Related literature

Linked databases 18