Ammonium pyrrolidinedithiocarbamate

purum p.a., ≥98.0% (NT)

APDC, Ammonium pyrrolidinecarbodithioate, 1-Pyrrolidinecarbodithioic acid ammonium salt, PDTC, PDC
Linear Formula:
C5H9NS2 · NH3
CAS Number:
Molecular Weight:
Beilstein/REAXYS Number:
EC Number:
MDL number:
PubChem Substance ID:

Quality Level


purum p.a.


≥98.0% (NT)


153-155 °C (lit.)

cation traces

Bi: ≤10 mg/kg
Ca: ≤10 mg/kg
Cd: ≤10 mg/kg
Co: ≤10 mg/kg
Cr: ≤10 mg/kg
Cu: ≤10 mg/kg
Fe: ≤10 mg/kg
K: ≤50 mg/kg
Mg: ≤10 mg/kg
Mn: ≤10 mg/kg
Na: ≤50 mg/kg
Ni: ≤10 mg/kg
Pb: ≤10 mg/kg
Zn: ≤10 mg/kg

SMILES string




InChI key


Gene Information

human ... RELA(5970)

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for the precipitation of As, Bi, Cd, Co, Cu, Fe, Mn, Ni, Pb, Sb, Sn, V, Zn from acidic solutions

Other Notes

Reagent used for the extraction and pre-concentration of heavy metals with an organic solvent from aqueous solutions for atomic absorption spectroscopy, AAS. MIBK (methyl isobutyl ketone) is the solvent of choice; The extract can be directly injected into the flame


13 - Non Combustible Solids

WGK Germany


Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves

Certificate of Analysis

Certificate of Origin

  1. How does the storage temperature relate to shipping conditions?

    The storage conditions that a Sigma-Aldrich catalog and label recommend for products are deliberately conservative. For many products, long-term storage at low temperatures will increase the time during which they are expected to remain in specification and therefore are labeled accordingly. Where short-term storage, shipping time frame, or exposure to conditions other than those recommended for long-term storage will not affect product quality, Sigma-Aldrich will ship at ambient temperature. The products sensitive to short-term exposure to conditions other than their recommended long-term storage are shipped on wet or dry ice. Ambient temperature shipping helps to control shipping costs for our customers. At any time, our customers can request wet- or dry-ice shipment, but the special handling is at customer expense if our product history indicates that the product is stable for regular shipment. See Shipping and Storage for more information.

  2. Which document(s) contains shelf-life or expiration date information for a given product?

    If available for a given product, the recommended re-test date or the expiration date can be found on the Certificate of Analysis.

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    The lot specific COA document can be found by entering the lot number above under the "Documents" section.

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  5. What is the Department of Transportation shipping information for this product?

    Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product. 

  6. How can I dissolve Product 09935, Ammonium pyrrolidinedithiocarbamate?

    Ammonium pyrrolidinedithiocarbamate is soluble in water at a concentration of approximately 50 mg/mL.

  7. What is the solution stability of Product 09935, Ammonium pyrrolidinedithiocarbamate?

    Sigma has not evaluated the solution stability of PDTC. However, aqueous stock solutions may be stable for at least one month when stored at -20 °C.

  8. What are some functions reported for Product 09935, Ammonium pyrrolidinedithiocarbamate?

    PDTC has been reported to repress vascular cell adhesion molecule-1 (VCAM-1) activation by Interleukin-1β in cultured human umbilical vein endothelial calls. Marui, M., et al., J. Clin. Invest, 92, 1866 (1993).  It inhibits the induction of nitric oxide synthase activity in rat alveolar macrophages. Sherman, M.P., et al., Biochem. Biophys. Res. Commun. 191, 1301-1308 (1993).  It is an Inhibitor of nuclear factor kappa B., Eberhardt, et al. Biochem. Biophys. Res. Commun. 200, 163 (1994). PDTC at 100  μM, totally inhibited the NF-kappa B response in intact cells. Schreck, R., et al., J. Exp. Med. 175 , 1181-1194 (1992). It activates cAMP-dependent protein kinase (PKA) in a colorectal cancer cell line. Chinery, R., et al., J. Biol. Chem., 272, 30356 - 30361, (1997).

  9. My question is not addressed here, how can I contact Technical Service for assistance?

    Ask a Scientist here.

Ammonium pyrrolidinedithiocarbamate-modified activated carbon micro-column extraction for the determination of As (III) in water by graphite furnace atomic absorption spectrometry.
Jiang Y, et al.
Microchimica Acta, 161(1-2), 137-1421 (2008)
M.S. Cresser
Solvent Extraction in Flame Spectroscopic Analysis (1978)
Determination of arsenic (III), arsenic (V), antimony (III), antimony (V), selenium (IV) and selenium (VI) by extraction with ammonium pyrrolidinedithiocarbamate-methyl isobutyl ketone and electrothermal atomic absorption spectrometry.
Subramanian KS and Meranger JC.
Analytica Chimica Acta, 124(1), 131-142 (1981)
J.D. Kinrade et al.
Analytical Chemistry, 46, 1894-1894 (1974)
C.E. Mulford
Atomic Absorp. Newsletter, 5, 88-88 (1966)

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