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Safety data sheet. GHS / OSHA HCS 2012 format, 16 sections. Issued by Epic Peptides Lab for the catalogue items listed in Section 1.

Epic Peptides Lab

Safety data sheet · lyophilized powder, vial

Epic Peptides Lab · USA

Document number
PL-SDS-121
Revision
1.0 · 2026-10-03

Oxytocin

lyophilized powder, vial

DANGER

1Identification

Product Identifier
Oxytocin
Document Number
PL-SDS-121
Catalogue Items Covered
  • Id
    2168
    Name
    Oxytocin 2mg
    Sku
    PL-OXYTOCIN-2MG-VIAL
Recommended Use
Laboratory research use by trained personnel.
Restrictions On Use
Not for human or veterinary use.
Supplier / Distributor
Epic Peptides Lab, USA
Telephone
+1 (787) 468-5291
Email
info@epicpeptideslab.com

2Hazard(s) identification

Classification
  • Acute toxicity, oral — Category 3 — H301
  • Acute toxicity, inhalation — Category 3 — H331
  • Respiratory sensitisation — Category 1 — H334
  • Skin sensitisation — Category 1 — H317
  • Reproductive toxicity — Category 1A — H360
  • Hazardous to the aquatic environment, long-term — Category 4 — H413
Label Elements
Pictograms
  • GHS06
  • GHS08
Signal
Danger
Hazard statements
  • H301 + H331 Toxic if swallowed or if inhaled.
  • H334 May cause allergy or asthma symptoms or breathing difficulties if inhaled.
  • H317 May cause an allergic skin reaction.
  • H360 May damage fertility or the unborn child.
  • H413 May cause long lasting harmful effects to aquatic life.
Precautionary statements
  • P201 Obtain special instructions before use.
  • P202 Do not handle until all safety precautions have been read and understood.
  • P261 Avoid breathing dust, mist or spray.
  • P264 Wash hands and any exposed skin thoroughly after handling.
  • P270 Do not eat, drink or smoke when using this product.
  • P271 Use only outdoors or in a well-ventilated area.
  • P272 Contaminated work clothing should not be allowed out of the workplace.
  • P273 Avoid release to the environment.
  • P280 Wear protective gloves, protective clothing and eye protection.
  • P284 In case of inadequate ventilation wear respiratory protection.
  • P301+P310 IF SWALLOWED: Immediately call a POISON CENTER or doctor.
  • P302+P352 IF ON SKIN: Wash with plenty of water.
  • P304+P340 IF INHALED: Remove person to fresh air and keep comfortable for breathing.
  • P308+P313 IF exposed or concerned: Get medical advice/attention.
  • P311 Call a POISON CENTER or doctor.
  • P321 Specific treatment: see Section 4 of this safety data sheet.
  • P330 Rinse mouth.
  • P333+P313 If skin irritation or rash occurs: Get medical advice/attention.
  • P342+P311 If experiencing respiratory symptoms: Call a POISON CENTER or doctor.
  • P362+P364 Take off contaminated clothing and wash it before reuse.
  • P403+P233 Store in a well-ventilated place. Keep container tightly closed.
  • P405 Store locked up.
  • P501 Dispose of contents and container to an approved waste disposal plant in accordance with local, state and federal regulations.
Signal Word
Danger
Other Hazards
No data available.

3Composition / information on ingredients

Description
Lyophilized (freeze-dried) powder or cake in a sealed glass vial with a rubber stopper and aluminium crimp cap.
Composition
  • Name
    Oxytocin
    Full
    Oxytocin (acetate salt as supplied)
    Cas
    50-56-6
    Formula
    C43H66N12O12S2
    Conc
    ≥ 95% (dry basis, as supplied)
    Qty
    2 mg per vial
    Hazards
    • Acute toxicity, oral — Category 3 — H301
    • Acute toxicity, inhalation — Category 3 — H331
    • Respiratory sensitisation — Category 1 — H334
    • Skin sensitisation — Category 1 — H317
    • Reproductive toxicity — Category 1A — H360
    • Hazardous to the aquatic environment, long-term — Category 4 — H413

4First-aid measures

First Aid Measures
Inhalation
Move the person to fresh air and keep comfortable for breathing. Immediately call a POISON CENTER or doctor. If experiencing respiratory symptoms (wheezing, shortness of breath), call a POISON CENTER or doctor.
Skin
Take off contaminated clothing and wash it before reuse. Wash the skin with plenty of soap and water. If a rash develops, get medical advice: the material may cause an allergic skin reaction.
Eyes
Rinse cautiously with water for several minutes. Remove contact lenses if present and easy to do; continue rinsing. If eye irritation persists, get medical advice.
Ingestion
Rinse mouth. Do not induce vomiting. Immediately call a POISON CENTER or doctor.
General
If exposed or concerned, get medical advice. Show this safety data sheet to the doctor. Pregnant or nursing laboratory staff should avoid exposure.
Most Important Symptoms And Effects
allergic skin rash; wheezing, chest tightness or asthma-like symptoms after inhalation in sensitised individuals; nausea, vomiting and other systemic effects after ingestion.
Likely Routes Of Exposure
Inhalation of dust, skin and eye contact when the vial is opened or the powder is weighed; ingestion through contaminated hands; accidental injection when reconstituted solutions are drawn into syringes.

5Fire-fighting measures

Fire Fighting Information
Combustible organic solid; finely divided powder may form dust clouds. Not flammable in the quantities supplied.

6Accidental release measures

Spill And Clean Up Procedures
Avoid dust formation. Dampen spilled powder with water, wipe up with absorbent material, place in a sealed container for disposal and clean the area with water and detergent.

7Handling and storage

Safe Handling
Open vials only in a clean area. Avoid generating or inhaling dust; weigh or reconstitute inside a ventilated enclosure when the full contents are handled as a dry powder. Reconstitute by adding diluent slowly to the vial wall; do not shake. Wash hands after handling.
Safe Storage
Store the sealed vial at the temperature stated in Section 9 (typically −20 °C for peptides, 2–8 °C for proteins), desiccated and protected from light. Allow the vial to reach room temperature before opening to avoid condensation. Reconstituted solutions: 2–8 °C, protected from light; use within the period established by your laboratory.
Storage Temperature
−20 °C (sealed vial), desiccated and protected from light; 2–8 °C acceptable for short periods
Incompatible Materials
reducing agents

8Exposure controls / personal protection

Occupational Exposure Limits
No data available.
Exposure Controls And PPE
No data available.

9Physical and chemical properties

Physical State
Solid
Appearance
White to off-white lyophilized powder
Properties
Odor
Characteristic (Cayman)
Ph
Not applicable (solid); aqueous solutions typically pH 4–7
Melting
200-204 C with decomposition (ChemicalBook); Cayman: undetermined
Boiling
Not determined (decomposes)
Flash
Not applicable (non-flammable solid); combustible organic material
Vapour
Negligible (solid)
Density
No data available (bulk density of lyophilized cake is low)
Solubility
Water: 10 mg/mL, clear, colorless (Sigma O6379 acetate salt hydrate); soluble to 1 mg/mL in water (Tocris); ChemicalBook: slightly soluble in water and methanol (free peptide); soluble in dilute aceti.
Logp
No data available
Decomp
No data available; peptides decompose above about 200 °C
Other
Free peptide C43H66N12O12S2, MW 1007.2, CAS 50-56-6; monoacetate salt CAS 6233-83-6; Sigma storage class 11 (combustible solids), WGK 3; Cayman: not flammable, no explosion hazard; store 2-8 C (Sigma).

10Stability and reactivity

Stability And Reactivity
Reactivity
No dangerous reactions known (Cayman); stable under normal conditions (Merck AH)
Incompatible
Strong oxidizing agents (Merck AH, ChemicalBook); reducing agents (disulfide); strong acids and bases
Decomposition
Carbon oxides, nitrogen oxides, sulfur oxides (ChemicalBook); Cayman: no dangerous decomposition products known
Conditions To Avoid
Heat, light, moisture, freezing-thawing of solutions; store refrigerated/frozen
Conditions To Avoid
Heat, light, moisture, freezing-thawing of solutions; store refrigerated/frozen
Incompatible Materials
reducing agents

11Toxicological information

Toxicological Information
  • Acute toxicity, oral

    LD50 oral rat > 21 mg/kg (Merck AH; ChemicalBook quotes > 20,520 ug/kg); LD50 oral mouse > 514 mg/kg (Merck AH); Bimeda uses ATE oral 100 mg/kg (Category 3). Cayman: no value given; classifies Acute Tox. 3 oral/inhalation

  • Acute toxicity, dermal

    No data available

  • Acute toxicity, inhalation

    No data available (Cayman classifies Category 3 by analogy with oral)

  • Skin corrosion/irritation

    No irritant effect (Cayman); not classified

  • Serious eye damage/irritation

    No irritating effect (Cayman); not classified

  • Respiratory or skin sensitisation

    Cayman: sensitisation possible through inhalation and through skin contact (Resp. Sens. 1 H334; Skin Sens. 1 H317). Merck AH/Bimeda: not classified for sensitisation

  • Germ cell mutagenicity

    Not classified; no data (Merck AH)

  • Carcinogenicity

    Not listed by IARC, NTP or OSHA

  • Reproductive toxicity

    Cayman: Repr. 1A H360; Bimeda: Repr. 1B; Merck AH: 'may damage the unborn child'; ChemicalBook: Repr. 2 H361. Uterotonic hormone - induces labour, uterine contraction, fetal distress, risk of abortion

  • STOT, single exposure

    No data available; human overdose effects: water intoxication/hyponatraemia, hypotension, cardiac arrhythmia, nausea, vomiting (Merck AH)

  • STOT, repeated exposure

    No data available

  • Aspiration hazard

    No data available

Routes Of Exposure
Inhalation of dust, skin and eye contact when the vial is opened or the powder is weighed; ingestion through contaminated hands; accidental injection when reconstituted solutions are drawn into syringes.
Symptoms
allergic skin rash; wheezing, chest tightness or asthma-like symptoms after inhalation in sensitised individuals; nausea, vomiting and other systemic effects after ingestion.

12Ecological information

Ecological Information
Cayman: water hazard class 2 (self-assessment): hazardous for water; classified Aquatic Chronic 4 (H413). Merck AH: 'toxic effects cannot be excluded' for acute and chronic aquatic toxicity; no measured data. Peptide - expected biodegradable.

13Disposal considerations

Disposal Guidance
No data available.

14Transport information

Transport Classification
Regulated
1
Un
UN 2811
Psn
TOXIC SOLID, ORGANIC, N.O.S.
Classification
6.1
Pg
III
Note
The quantities supplied (milligram amounts per inner packaging) qualify for the excepted-quantity provisions of 49 CFR 173.4a, IATA DGR 2.6 (code E1) and IMDG 3.5 when packed accordingly. Not a marine pollutant.

15Regulatory information

Regulatory Information
Tsca
Not listed (Cayman, ChemicalBook); listed on EINECS (200-048-4)
Carcinogen Listings
Not listed by IARC, NTP, OSHA, EPA; no SARA 313 listing; not a California Prop 65 chemical (Merck AH)
Dea
Not a controlled substance (prescription drug, Rx only - Pitocin/generic oxytocin injection)
Other
Not on the WADA Prohibited List. FDA-approved drug (uterotonic). Sigma WGK 3 (severely hazardous to water) - German self-classification. Sigma SDS (O3251/O6379) could not be retrieved (404/429).
Carcinogen Listings
No data available.

16Other information

Revision
October 3, 2026
Sources Consulted
  • Cayman Chemical
  • ChemicalBook MSDS
  • Merck Animal Health
  • Bimeda
Confidence
high
Additional Information
  • Uterotonic hormone; may cause uterine contractions. Also classified Repr. 1B by Bimeda and Repr. 2 by ChemicalBook.
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