1,1-Dimethylhydrazine

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  • Identifiers

    CAS number
    57-14-7

    Molecular formula
    C2H8N2

    SMILES
    CN(C)N

    Safety labels

    Flammable
    Flammable

    Corrosive
    Corrosive

    Acute Toxic
    Acute Toxic

    Health Hazard
    Health

    Environmental Hazard
    Environmental

  • Odor profile

    fishy 77.2%
    cheesy 56.54%
    ripe 49.13%
    odorless 39.61%
    pungent 17.95%
    oily 17.22%
    animal 17.01%
    meaty 14.59%
    musty 14.03%
    sweaty 13.41%

    Scent© AI

    Odor threshold>

    • Odor Threshold Low: 6.1 [mmHg]. Odor Threshold High: 14.0 [mmHg]. Detection odor threshold from AIHA (mean = 9.2)
    • 12.0 mg/cu m (low); 20.0 mg/cu m (high)
    • Sharp, ammonia-like odor. Odor threshold: 0.3, 11.7, and 6-14 ppm.
    • The warning properties (irritation & odor) of the hydrazines are probably sufficient to prevent acute poisoning from short exposures. However, in view of the chronic toxicity properties, the warning properties should not be considered adequate for prolonged exposures. /Hydrazines/

  • Properties

    XLogP3-AA
    -0.5 Well soluble in DPG, ETH, PG

    Molecular weight
    60.1 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Ultra fast

    Melting point expt.

    • -72 °F (EPA, 1998)
    • -58 °C
    • -72 °F

    Boiling point

    • 147 °F at 760 mmHg (EPA, 1998)
    • 63.9 °C at 760 mm Hg
    • 64 °C
    • 147 °F

    Flash point expt.

    • 5 °F (EPA, 1998)
    • -15 °C, 5 °F (closed cup)
    • -15 °C c.c.
    • 5 °F

    Solubility expt.

    • Decomposes (NTP, 1992)
    • Very sol in methanol and ethanol
    • >10% in water
    • Miscible with dimethylformamide, hydrocarbons, alcohol, ether
    • Miscible in water at 25 °C
    • Solubility in water: very good
    • Miscible

  • Synonyms

    • 1,1-DIMETHYLHYDRAZINE
    • 57-14-7
    • N,N-Dimethylhydrazine
    • Dimazine
    • gem-Dimethylhydrazine
    • 1,1-Dimethylhydrazin
    • Unsymmetrical dimethylhydrazine
    • Unsym-dimethylhydrazine
    • u-Dimethylhydrazine
    • 1,1-Dimethyl hydrazine
    • Dimazin
    • uns-Dimethylhydrazine
    • UDMH
    • Hydrazine, N,N-dimethyl-
    • Hydrazine, 1,1-dimethyl-
    • as-Dimethylhydrazine
    • as-Dimethyl hydrazine
    • asymmetric Dimethylhydrazine
    • RCRA waste number U098
    • unsymmetrical-Dimethylhydrazine
    • Dimethylhydrazine, unsym.
    • asymmetric-Dimethylhydrazine
    • N,N-Dimetilidrazina
    • CCRIS 258
    • Dimethylhydrazine unsymmetrical
    • NSC 60517
    • HSDB 528
    • N,N-Dimetilidrazina [Italian]
    • 1,1-Dimethylhydrazin [German]
    • DTXSID1020516
    • Niesymetryczna dwu metylohydrazyna
    • EINECS 200-316-0
    • BRN 0605261
    • 4WPQ90N53J
    • Dimethylhydrazine, unsymmetrical
    • 1.1-Dimethylhydrazine
    • Niesymetryczna dwu metylohydrazyna [Polish]
    • NSC-60517
    • DTXCID50516
    • (CH3)2NNH2
    • CHEBI:18853
    • EC 200-316-0
    • NSC60517
    • 1,1-DIMETHYLHYDRAZINE [MI]
    • 1,1-DIMETHYLHYDRAZINE [HSDB]
    • 1,1-DIMETHYLHYDRAZINE [IARC]
    • N,N-dimetilidrazina (Italian)
    • 1,1-dimethyhydrazine
    • 1,1-DIMETHYLHYDRAZINE (IARC)
    • 1,1-DIMETHYLHYDRAZIN (GERMAN)
    • DIMETHYLHYDRAZINE, (UNSYMMETRICAL)
    • DIMETHYLHYDRAZINE, [UNSYMMETRICAL]
    • C2H8N2
    • NIESYMETRYCZNA DWU METYLOHYDRAZYNA (POLISH)
    • UN1163
    • Dimethyl hydrazine (DMH)
    • RCRA waste no. U098
    • UNII-4WPQ90N53J
    • Hydrazine, dimethyl
    • 1,1-dimethyldiazane
    • Dimethylhydrazine, as
    • asym-Dimethylhydrazine
    • Hydrazine,N-dimethyl-
    • Hydrazine,1-dimethyl-
    • N,N-dimethyl hydrazine
    • N,N-Dimethyl-hydrazine
    • 1,1-dimethyl-hydrazine
    • Me2NNH2
    • N',N'-dimethylhydrazine
    • ASYM DIMETHYLHYDRAZINE
    • unsymmetrical-dimethylhyrazine
    • N,N-Dimethylhydrazine, 98%
    • WLN: ZN1&1
    • DTXSID70193615
    • HYDRAZINE, 1,1-DIMETHYL
    • Tox21_302358
    • MFCD00007628
    • 1,1-Dimethylhydrazine (ACGIH:OSHA)
    • AKOS000119664
    • UN 1163
    • CAS-57-14-7
    • USEPA/OPP Pesticide Code: 600018
    • NCGC00255194-01
    • D0740
    • NS00008277
    • C19233
    • A831327
    • InChI=1/C2H8N2/c1-4(2)3/h3H2,1-2H
    • Q161296
    • Dimethylhydrazine, unsymmetrical [UN1163] [Poison]
    • 200-316-0
1 4

IFRA Standard 51

Recommendation
No restriction
Maximum acceptable concentrations in the finished product (%)
Category 1
Products applied to the lips
 No restriction Category 7A
Rinse-off products applied to the hair with some hand contact
 No restriction
Category 2
Products applied to the axillae
 No restriction Category 7B
Leave-on products applied to the hair with some hand contact
 No restriction
Category 3
Products applied to the face/body using fingertips
 No restriction Category 8
Products with significant anogenital exposure
 No restriction
Category 4
Products related to fine fragrance
 No restriction Category 9
Products with body and hand exposure, primarily rinse off
 No restriction
Category 5A
Body lotion products applied to the body using the hands (palms), primarily leave on
 No restriction Category 10A
Household care products with mostly hand contact
 No restriction
Category 5B
Face moisturizer products applied to the face using the hands (palms), primarily leave on
 No restriction Category 10B
Household care products with mostly hand contact, including aerosol/spray products (with potential leave-on skin contact)
 No restriction
Category 5C
Hand cream products applied to the hands using the hands (palms), primarily leave on
 No restriction Category 11A
Products with intended skin contact but minimal transfer of fragrance to skin from inert substrate without UV exposure
 No restriction
Category 5D
Baby Creams, baby Oils and baby talc
 No restriction Category 11B
Products with intended skin contact but minimal transfer of fragrance to skin from inert substrate with potential UV exposure
 No restriction
Category 6
Products with oral and lip exposure
 No restriction Category 12
Products not intended for direct skin contact, minimal or insignificant transfer to skin
 No restriction